Pityriasis lichenoides (PL) is an uncommon cutaneous rash of uncertain aetiology . The acute form, pityriasis lichenoides et varioliformis acuta (PLEVA), and the chronic form, pityriasis lichenoides chronica (PLC), sit at either end of a disease spectrum with many patients showing overlapping features. The …It is also known as lymphostatic verrucosis, elephantiasis crurum papillaris et verrucosa, ‘mossy leg’, lymphangitis recurrens elephantogenica, and lymphostatic papillomatosis cutis. ‘Nostras’ is a term used to describe the non- filiarial form of elephantiasis. Gross hyperkeratosis and nodularity in ENV. Lymphoedema over the toes with ...Lichen simplex is a chronic itchy skin disorder characterised by well demarcated, erythematous patches, and plaques of thickened leathery skin. Erythema may be variable, and lesions may be solitary or multiple. Lichen simplex is also known as neurodermatitis, lichen simplex chronicus, and neurodermatitis circumscripta.Trachyonychia is characterised by brittle nails that show diffuse longitudinal ridging and can be accompanied by pitting, loss of lustre, or a roughened nail plate. Trachyonychia, also known as ‘rough nails’ or ‘sandpaper nails’, can involve any number of nails. Twenty-nail dystrophy refers to trachyonychia that affects all 20 nails.Benign pigmented skin lesions may be melanocytic or non-melanocytic in origin. Specific dermatoscopic features suggesting melanocytic origin include the presence of: Pigment network. Aggregated brown or black globules. Specific features: parallel pattern on palms and soles, follicular openings on facial skin, homogeneous steel-blue of blue naevus.Psoriasis is a common scaly skin condition resulting in red scaly and thickened patches of skin. Flexural psoriasis is sometimes called inverse psoriasis and describes psoriasis localised to the skin folds and genitals. Common sites of flexural psoriasis are: Armpits. Groin. Under the breasts.Women and patients with skin of colour are most likely to present for medical attention. Idiopathic guttate hypomelanosis becomes more common with age, affecting <50% in the fourth decade (31–40 years), 50–80% of people over 40 years of age, and >90% in the ninth decade (81–90 years). It has been reported …By definition, dermographism appearing at least 30 minutes after stroking. It may be described after a typical weal of immediate dermographism comes and goes, 3–6 hours later a wide weal reappears without a flare at the same site and persists for up to 48 hours. Associated with burning and tenderness of the weal. Dermatoporosis is a term used to describe chronic cutaneous insufficiency and fragility associated with both intrinsic and extrinsic ageing. The features of dermatoporosis include: Skin fragility and atrophy. Senile purpura. Stellate pseudoscars (star-shaped white patches) Non-healing atrophic ulcers. Dec 9, 2019 · Phytophotodermatitis, a form of plant dermatitis, is a skin reaction that occurs after natural photosensitising chemicals (furanocoumarins) present within plant sap and fruits, become smeared onto the skin, and there is subsequent exposure to sunlight. The areas affected become acutely red, and often blister. What is blue toe syndrome?. Blue toe syndrome, also known as occlusive vasculopathy, is a form of acute digital ischaemia in which one or more toes become a blue or violet colour. There may also be scattered areas of petechiae or cyanosis of the soles of the feet.. Blue toe syndrome is associated with small vessel occlusion and can occur without obvious …Cutaneous T-cell lymphoma can cause harmless swelling, known as reactive or dermopathic lymphadenopathy, or malignant growth in the lymph nodes. The blood count is normal in most patients with CTCL. An elevated white cell count is characteristic of Sézary syndrome and confirmed on flow cytometry.Dermoscopy quiz (2 of 3) Dermoscopy quiz (3 of 3) Different causes of purpura – 10 cases. Eczema – 14 cases. Fungal infections – 12 cases. Hair loss – 14 cases. Irritant contact dermatitis – 12 cases. Irritating skin problems affecting the axilla – 10 cases. Leg rashes and unwell – 10 cases.Irritant contact dermatitis develops when chemical or physical agents damage the skin surface faster than the skin can repair. Irritants remove oils and natural moisturising factor from the outer layer of the skin, allowing chemical irritants to penetrate the skin barrier and trigger inflammation. Factors influencing the development and ...Chondrodermatitis nodularis is a solitary, firm, and oval-shaped nodule, 4–6 mm in diameter, with central crust and surrounding erythema. In men, the most common site for CNH is the helix, while in women it is more often found on the antihelix. It is typically unilateral, located on the sleeping side, but can be bilateral. Common wart. Common warts (verruca vulgaris) present as cauliflower-like papules with a rough, papillomatous and hyperkeratotic surface ranging in size from 1 mm to 1 cm or more. They may be solitary or multiple. Common warts are found most often on the knees, backs of fingers or toes, and around the nails ( periungual ). Dermatoporosis is a term used to describe chronic cutaneous insufficiency and fragility associated with both intrinsic and extrinsic ageing. The features of dermatoporosis include: Skin fragility and atrophy. Senile purpura. Stellate pseudoscars (star-shaped white patches) Non-healing atrophic ulcers. Adults. Assess risk factors and comorbid disease of psoriasis at presentation and as indicated thereafter. Cardiovascular risk factors, and management of these (eg, smoking cessation ) Measure blood pressure, lipid studies and fasting glucose at least annually. Risk of venous thromboembolism and its management [1].Cellulitis is a common bacterial skin infection of the lower dermis and subcutaneous tissue. It results in a localised area of red, painful, swollen skin, and systemic symptoms. Left untreated, cellulitis can be life-threatening. Similar symptoms are experienced with the more superficial infection, erysipelas, so cellulitis and erysipelas are ...See full list on dermnetnz.org Irritant contact dermatitis develops when chemical or physical agents damage the skin surface faster than the skin can repair. Irritants remove oils and natural moisturising factor from the outer layer of the skin, allowing chemical irritants to penetrate the skin barrier and trigger inflammation. Factors influencing the development and ...Jan 4, 2016 · A topical steroid is an anti- inflammatory preparation used to control eczema / dermatitis and many other skin conditions. Topical steroids are available in creams, ointments, solutions and other vehicles. Topical steroids are also called topical corticosteroids, glucocorticosteroids, and cortisone. A list of the most commonly used key terms and phrases in dermatology.DermNet is a comprehensive online resource for skin health information. Learn about psoriasis, a chronic inflammatory skin condition with red and scaly plaques, its types, causes, diagnosis and treatment options.Abrocitinib is an effective systemic therapy, easy to administer as an oral medication that can be taken with or without food, and usually well tolerated. In clinical trials, it reduces the severity of atopic eczema with significant clearing of the skin and rapid improvement of itch ( pruritus) when compared to placebo.Contact dermatitis (also called contact eczema) refers to a group of skin disorders in which the skin reaction is due to direct contact with the causative agent. The term dermatitis implies that the outside layers of skin are affected. It can be acute (a single episode) or chronic ( persistent ). Dermatitis is nearly always itchy.Dermatologist – USA. One of the most easy, complete and comprehensive sources for dermatological conditions. Every topic is well written and covered completely. This site is …Dermatology: 2-Volume Set. Edited by Jean L. Bolognia et al. 4th Edition. This is a popular text, encompassing comprehensive, authoritative coverage of basic science, clinical …Patches are round, oval or irregular in shape. Pityriasis alba may have well- demarcated or, more usually, poorly defined edges. Itch is minimal or absent. Hypopigmentation is more noticeable in summer. Dryness and scaling is more noticeable in winter when environmental humidity tends to be lower. Typically, a patch of pityriasis alba evolves ...DermNet™ is a website that provides reliable and evidence-based information on skin conditions, treatments, and allergies. You can search for common or rare skin diseases, …Introduction. Genital skin problems are very common and can be very itchy or painful, distressing and embarrassing. They can interfere with sexual functioning, self-image and interpersonal relationships. Some genital disorders are contagious, including sexually transmitted diseases. This page provides links to information On DermNet about skin ...Lipodermatosclerosis is an inflammatory skin condition resulting from underlying venous insufficiency. This is caused by: Incompetent venous valves. Venous outflow obstruction. Dysfunction of the calf muscle pump [2]. The resulting venous hypertension causes an increase of leukocytes within the veins, which then migrate into surrounding tissue.Salicylic acid belongs to a group of medicines known as keratolytics. It is used in the treatment of scaly skin diseases where the skin has become thickened, scaly and flaky. Topical preparations of salicylic acid, either alone or in combination with other medicines, can be used to treat the following common scaly skin conditions: Viral warts.Periorificial dermatitis is a common facial skin problem characterised by groups of itchy or tender small red papules. The area around the eyes, nose, and mouth are most commonly affected, however papules may also be found on the genitals. The characteristics of facial periorificial dermatitis are as follows.Erythema multiforme is an immune-mediated, typically self-limiting, mucocutaneous condition characterised by ‘target’ lesions . Significant mucosal involvement distinguishes erythema multiforme major from multiforme minor. Episodes can be isolated, recurrent, or persistent. In most cases, erythema multiforme is precipitated by herpes ...Dermatology resources for medical students. Welcome to DermNet’s medical student resource centre. This centre has been designed to help increase your confidence and knowledge in the field of dermatology. We will be updating this page regularly; join our mailing list to stay up to date. In the meantime, why not start by signing up for our free ...17.8% were aged 50-59. 23.9% were aged 60-69. 23.7% were aged 70-79. 16% were aged 80 or older. The mean age for melanoma diagnosis is 65.7 years among men and 62.4 years among women. Melanoma is the most common cancer diagnosed in young Australians aged 15–29 years, accounting for 15% of … Periorificial dermatitis is a common facial skin problem characterised by groups of itchy or tender small red papules. The area around the eyes, nose, and mouth are most commonly affected, however papules may also be found on the genitals. The characteristics of facial periorificial dermatitis are as follows. Abrocitinib is an effective systemic therapy, easy to administer as an oral medication that can be taken with or without food, and usually well tolerated. In clinical trials, it reduces the severity of atopic eczema with significant clearing of the skin and rapid improvement of itch ( pruritus) when compared to placebo.UVB phototherapy is delivered within a specially designed cabinet. Fluorescent light tubes are positioned to target affected areas with ultraviolet radiation (eg, hands or feet). For full body treatments, patients are undressed with genitalia covered, and eyes or full face should be protected with goggles or a face mask.Hand, foot, and mouth disease (HFMD or HFM) is a common, self-limiting, viral infection that causes blisters on the hands, feet, and inside or around the mouth. It mainly affects children under the age of 5 years. HFMD, also called enteroviral vesicular stomatitis, occurs sporadically worldwide. Epidemics are most common during warm weather ...Dupilumab (Dupixent ®; Sanofi, Paris, France; Regeneron, New York, USA) is a fully human monoclonal antibody, which has shown significant efficacy and a favourable safety profile in moderate-to-severe atopic dermatitis alone and in combination with topical corticosteroids. The U.S. Food and Drug Administration (FDA) approved Dupixent ® as a ...Different. D is for Different.. Most people have a 'signature naevus' - all their melanocytic naevi resemble each other. A melanoma appears unique and very different from the patient’s other lesions.. A pigmented lesion that is obviously different from the others is sometimes called an 'ugly duckling', 'black sheep', 'lone ranger', or 'odd-mole-out' and …Chronic urticaria can affect children and adults. Chronic inducible urticaria is more common than chronic spontaneous urticaria. Adults with chronic urticaria have a significantly higher prevalence of atopicdermatitis, asthma, and allergic rhinitis than a control population. In children, the prevalence of atopy is similar in those with …A melanocytic naevus (American spelling ‘ nevus ’), or mole, is a common benign skin lesion due to a local proliferation of pigment cells ( melanocytes ). It is sometimes called a naevocytic naevus or just 'naevus' (but note that there are other types of naevi ). A brown or black melanocytic naevus contains the pigment … Basal cell carcinoma (BCC) is a common, locally invasive, keratinocyte cancer (also known as nonmelanoma cancer). It is the most common form of skin cancer. BCC is also known as rodent ulcer and basalioma. Patients with BCC often develop multiple primary tumours over time. DermNet NZ is a comprehensive online resource for skin diseases and conditions. Learn about acne, a common chronic disorder affecting the hair follicle and sebaceous gland, its causes, features, treatment options, and …A topical steroid is an anti- inflammatory preparation used to control eczema / dermatitis and many other skin conditions. Topical steroids are available in creams, ointments, solutions and other vehicles. Topical steroids are also called topical corticosteroids, glucocorticosteroids, and cortisone.Dermatologist – USA. One of the most easy, complete and comprehensive sources for dermatological conditions. Every topic is well written and covered completely. This site is …Venous eczema can form discrete patches or become confluent and circumferential. Features include: Itchy red, blistered and crusted plaques; or dry fissured and scaly plaques on one or both lower legs. Orange-brown macular pigmentation due to haemosiderin deposition. Atrophie blanche (white irregular scars surrounded by red spots)Plant dermatitis is an inflammation of the skin caused by topical contact with a plant or plant constituent. Phytodermatitis is the formal medical name for plant dermatitis, and it may be an irritant contact dermatitis, allergic contact dermatitis, or phytophotodermatitis. Contact urticaria and mechanical irritation can also be due to plants.Dupilumab (Dupixent ®; Sanofi, Paris, France; Regeneron, New York, USA) is a fully human monoclonal antibody, which has shown significant efficacy and a favourable safety profile in moderate-to-severe atopic dermatitis alone and in combination with topical corticosteroids. The U.S. Food and Drug Administration (FDA) approved Dupixent ® as a ...Jan 4, 2016 · A topical steroid is an anti- inflammatory preparation used to control eczema / dermatitis and many other skin conditions. Topical steroids are available in creams, ointments, solutions and other vehicles. Topical steroids are also called topical corticosteroids, glucocorticosteroids, and cortisone. Patches are round, oval or irregular in shape. Pityriasis alba may have well- demarcated or, more usually, poorly defined edges. Itch is minimal or absent. Hypopigmentation is more noticeable in summer. Dryness and scaling is more noticeable in winter when environmental humidity tends to be lower. Typically, a patch of pityriasis alba evolves ...Plant dermatitis is an inflammation of the skin caused by topical contact with a plant or plant constituent. Phytodermatitis is the formal medical name for plant dermatitis, and it may be an irritant contact dermatitis, allergic contact dermatitis, or phytophotodermatitis. Contact urticaria and mechanical irritation can also be due … Acne products should be applied to all areas affected by acne, rather than just put on individual spots. A thin smear should only be applied to dry clean skin at nighttime. Acne products may work better if applied in the morning as well. They often cause dryness particularly in the first 2–4 weeks of use. Skin as a barrier. Skin is the largest organ of the human body and comprises three major layers; epidermis, dermis, and subcutis [see Structure of normal skin]. One vital function of the skin is to form an effective barrier between the organism and the environment. It maintains an ‘inside-outside’ barrier regulating water loss, and an ‘outside-inside’ barrier …Dermatology Quiz Course - Beginners. Click here for the advanced course. Test your knowledge on common dermatology cases. Join our beginners dermatology quiz …A list of the most commonly used key terms and phrases in dermatology.It is also known as lymphostatic verrucosis, elephantiasis crurum papillaris et verrucosa, ‘mossy leg’, lymphangitis recurrens elephantogenica, and lymphostatic papillomatosis cutis. ‘Nostras’ is a term used to describe the non- filiarial form of elephantiasis. Gross hyperkeratosis and nodularity in ENV. Lymphoedema over the toes with ...Many writers are based in New Zealand, but others have contributed from UK, USA, Canada, Australia, Mexico, Indonesia, Sri Lanka and elsewhere. Visit our website at …Dr Amanda Oakley. Dr Mark Duffill. Dr Marius Rademaker. Editor. Dr Ian Coulson. URL. dermnetnz .org. DermNet is a worldwide clinical resource website about dermatology …Dermatomal — lesions confined to one or more segments of skin innervated by a single spinal nerve ( dermatomes ). Extensor — involving extensor surfaces of limbs. Contrast with flexor surfaces. Flexural — related to flexion, or skin folds, such as the backs of knees, the armpits, the elbow creases and the groin. Common wart. Common warts (verruca vulgaris) present as cauliflower-like papules with a rough, papillomatous and hyperkeratotic surface ranging in size from 1 mm to 1 cm or more. They may be solitary or multiple. Common warts are found most often on the knees, backs of fingers or toes, and around the nails ( periungual ). DermNet does not provide an online consultation service. If you have any concerns with your skin or its treatment, see a dermatologist for advice. Search DermNet to see clinical skin …Introduction. Genital skin problems are very common and can be very itchy or painful, distressing and embarrassing. They can interfere with sexual functioning, self-image and interpersonal relationships. Some genital disorders are contagious, including sexually transmitted diseases. This page provides links to information On DermNet about skin ...Systemic sclerosis (SSc) is an autoimmune inflammatory condition. It results in potentially widespread fibrosis and vascular abnormalities, which can affect the skin, lungs, gastrointestinal tract, heart and kidneys. The skin becomes thickened and hard ( sclerotic ). Systemic sclerosis has been subdivided into two main subtypes, according to ...Heat urticaria is a rare type of physical or chronic inducible urticaria. It is also called contact heat urticaria and localised heat urticaria. Heat urticaria occurs following the direct contact of a warm stimulus to the skin. The onset of urticaria is typically rapid (within minutes) and the urticaria resolves within 1–2 hours.Subacute cutaneous lupus erythematosus. Subacute cutaneous lupus erythematosus is less commonly associated with SLE with approximately 50% having a mild form of SLE. It is thought 20–40% have drug-induced SCLE. It comprises 10–15% of cutaneous LE presentations. The skin changes are more persistent than those of ACLE.Pityriasis versicolor affects the trunk, neck, and/or arms, and is uncommon on other parts of the body. The patches may be coppery brown, paler than surrounding skin, or pink. Pale patches may be more common in darker skin; this appearance is known as pityriasis versicolor alba. Sometimes the patches start scaly and brown, and …DermNet NZ is a comprehensive online resource for skin diseases and conditions. Learn about acne, a common chronic disorder affecting the hair follicle and sebaceous gland, its causes, features, treatment options, and …Pityriasis rosea is a self-limiting rash, which resolves in about 6–10 weeks. It is characterised by a large circular or oval "herald patch ", usually found on the chest, abdomen, or back. The herald patch …Pityriasis lichenoides (PL) is an uncommon cutaneous rash of uncertain aetiology . The acute form, pityriasis lichenoides et varioliformis acuta (PLEVA), and the chronic form, pityriasis lichenoides chronica (PLC), sit at either end of a disease spectrum with many patients showing overlapping features. The …Feb 28, 2019 · Nodular prurigo (NP) or prurigo nodularis is a chronic skin condition characterised by very itchy firm lumps. It can appear anywhere on the body but is most common on the arms, legs, back, and torso, in a symmetrical distribution. It is the most severe form of prurigo and thus can be difficult to treat. Heat urticaria is a rare type of physical or chronic inducible urticaria. It is also called contact heat urticaria and localised heat urticaria. Heat urticaria occurs following the direct contact of a warm stimulus to the skin. The onset of urticaria is typically rapid (within minutes) and the urticaria resolves within 1–2 hours.Seborrhoeic dermatitis is a common, chronic, or relapsing form of eczema /dermatitis that mainly affects the sebaceous gland -rich regions of the scalp, face, and trunk. There are infantile and adult forms of seborrhoeic dermatitis. This benign inflammatory condition is sometimes associated with psoriasis and is known as …Lichen simplex is a chronic itchy skin disorder characterised by well demarcated, erythematous patches, and plaques of thickened leathery skin. Erythema may be variable, and lesions may be solitary or multiple. Lichen simplex is also known as neurodermatitis, lichen simplex chronicus, and neurodermatitis circumscripta.Contact dermatitis (also called contact eczema) refers to a group of skin disorders in which the skin reaction is due to direct contact with the causative agent. The term dermatitis implies that the outside layers of skin are affected. It can be acute (a single episode) or chronic ( persistent ). Dermatitis is nearly always itchy.Hotel island house key west, Controlled products systems group, Leslie tire, Saphira crystal, Milk bar sf, Columbustech, Chinook winds, Hook and ladder manufacturing company, Cap city comedy club, Lauf bikes, Pet md, Soldier on, Shorewood animal hospital, St joseph hospital paterson new jersey
Dermatopathology is a subspecialty of pathology. Pathology is the study of diseases. It includes the study of the causes, course and progression and the complications that arise from the disease. Anatomic pathology, or histopathology, refers to the study of the structural and compositional changes that occur in organs and tissues as a result of .... Mercer bookstore
DermNet Cases. DermNet now features a library of authentic patient cases with images. These cover the various symptoms, diagnosis, treatments, and outcomes that can be expected in the real world. You'll find these cases listed below. All of our content is written by medical professionals and reviewed by dermatologists before … Urticaria is characterised by very itchy weals (hives), with or without surrounding erythematous flares. The name urticaria is derived from the common European stinging nettle Urtica dioica . Urticaria can be acute or chronic, spontaneous or inducible. A weal (or wheal) is a superficial skin-coloured or pale skin swelling, usually surrounded by ... Common wart. Common warts (verruca vulgaris) present as cauliflower-like papules with a rough, papillomatous and hyperkeratotic surface ranging in size from 1 mm to 1 cm or more. They may be solitary or multiple. Common warts are found most often on the knees, backs of fingers or toes, and around the nails ( periungual ).Women and patients with skin of colour are most likely to present for medical attention. Idiopathic guttate hypomelanosis becomes more common with age, affecting <50% in the fourth decade (31–40 years), 50–80% of people over 40 years of age, and >90% in the ninth decade (81–90 years). It has been reported uncommonly in children and teens.Measles vaccine induces long-term (probably life-long) immunity in most individuals. Vaccination schedules recommend a two-dose immunisation strategy; the first dose at 12–15 months of age, followed by a second dose at 4–6 years. Measles vaccine should not be given during pregnancy.Cellulitis is a common bacterial skin infection of the lower dermis and subcutaneous tissue. It results in a localised area of red, painful, swollen skin, and systemic symptoms. Left untreated, cellulitis can be life-threatening. Similar symptoms are experienced with the more superficial infection, erysipelas, so cellulitis and erysipelas are ...Tinea versicolor is more accurately called pityriasis versicolor. This is a common yeast infection on the trunk. Tinea incognito refers to a tinea infection in which the clinical appearance has changed because of inappropriate treatment. Tinea nigra is a mould infection (not a dermatophyte). It affects the palms or soles, which appear brown (on ...Malignancy. Cutaneous cysts and pseudocysts are non- proliferative benign lesions. Nodulocystic basal cell carcinoma is a common skin cancer that presents as a rounded nodule and may initially be mistaken for a cyst, but steady enlargement, destruction of the epidermis with ulceration and bleeding occur eventually.DermNet images. View pictures of acral lentiginous melanoma in the gallery below. This rare subtype of melanoma can appear on the palms, soles, or under the nails. It can arise in normal-appearing skin, or more rarely it can develop within an …Dermatopathology is a subspecialty of pathology. Pathology is the study of diseases. It includes the study of the causes, course and progression and the complications that arise from the disease. Anatomic pathology, or histopathology, refers to the study of the structural and compositional changes that occur in organs and tissues as a result of ...UVB phototherapy is delivered within a specially designed cabinet. Fluorescent light tubes are positioned to target affected areas with ultraviolet radiation (eg, hands or feet). For full body treatments, patients are undressed with genitalia covered, and eyes or full face should be protected with goggles or a face mask.Assessment. Assessment requires a careful history and physical examination. Identification of triggers. Irritants eg soaps and detergents (including shampoo, bubble bath, washing up liquid), chlorinated swimming pools, sodium lauryl sulphate-containing emollients; Skin infections: Staphylococcus aureus, Streptococcus pyogenes, herpes simplex (eczema … Pruritus is the medical term for itch. Itch is an unpleasant sensation on the skin that provokes the desire to rub or scratch the area to obtain relief. Itch can cause discomfort and frustration; in severe cases it can lead to disturbed sleep, anxiety and depression. Constant scratching to obtain relief can damage the skin ( excoriation ... Dermatology: 2-Volume Set. Edited by Jean L. Bolognia et al. 4th Edition. This is a popular text, encompassing comprehensive, authoritative coverage of basic science, clinical …Tinea versicolor is more accurately called pityriasis versicolor. This is a common yeast infection on the trunk. Tinea incognito refers to a tinea infection in which the clinical appearance has changed because of inappropriate treatment. Tinea nigra is a mould infection (not a dermatophyte). It affects the palms or soles, which appear brown (on ... Periorificial dermatitis is a common facial skin problem characterised by groups of itchy or tender small red papules. The area around the eyes, nose, and mouth are most commonly affected, however papules may also be found on the genitals. The characteristics of facial periorificial dermatitis are as follows. DermNet is a not-for-profit, independent health publishing organisation with a mission to make authoritative information about the skin accessible to anyone in the world. We have information about almost every skin condition and have a library of over 20,000 dermatology images. All of our content is created or reviewed by a …Irritant contact dermatitis develops when chemical or physical agents damage the skin surface faster than the skin can repair. Irritants remove oils and natural moisturising factor from the outer layer of the skin, allowing chemical irritants to penetrate the skin barrier and trigger inflammation. Factors influencing the development and ...Dermatomal — lesions confined to one or more segments of skin innervated by a single spinal nerve ( dermatomes ). Extensor — involving extensor surfaces of limbs. Contrast with flexor surfaces. Flexural — related to flexion, or skin folds, such as the backs of knees, the armpits, the elbow creases and the groin.Exanthems during childhood are very common and are usually due to specific viral infections: Chickenpox (varicella) Measles (morbillivirus) Rubella (rubella virus) Roseola (herpes virus 6B) Erythema infectiosum (parvovirus B19). Viral exanthems also include: Acute human immunodeficiency virus infection syndrome. Smallpox.Guttate psoriasis is a clinical diagnosis, aided by dermoscopy, which can be confirmed on skin biopsy. Examination and investigations should include a search for streptococcal infection. Tests may include: Swabs for bacteriology. Blood tests — Anti-streptolysin O titre (ASOT), anti-DNase B titre.UVB phototherapy is delivered within a specially designed cabinet. Fluorescent light tubes are positioned to target affected areas with ultraviolet radiation (eg, hands or feet). For full body treatments, patients are undressed with genitalia covered, and eyes or full face should be protected with goggles or a face mask.Imiquimod is an immune response modifier. It is manufactured as a 5% (50 mg/g) cream called Aldara™. Generic forms of imiquimod cream are also available. The Perrigo brand is funded by PHARMAC in New Zealand (2019). A 3.75% cream called Zyclara™ has also been approved by the FDA in the USA but is not yet available in New Zealand (March 2017).Clindamycin is a lincosamide antibiotic. It is used to treat infections due to susceptible bacteria. Clindamycin can be used topically, orally or intravenously. In New Zealand (July 2017), it is available on prescription. In other countries, it may also be available as a topical foam, vaginal cream and oral suspension.Systemic sclerosis (SSc) is an autoimmune inflammatory condition. It results in potentially widespread fibrosis and vascular abnormalities, which can affect the skin, lungs, gastrointestinal tract, heart and kidneys. The skin becomes thickened and hard ( sclerotic ). Systemic sclerosis has been subdivided into two main subtypes, according to ... Dermatology resources for medical students. Welcome to DermNet’s medical student resource centre. This centre has been designed to help increase your confidence and knowledge in the field of dermatology. We will be updating this page regularly; join our mailing list to stay up to date. In the meantime, why not start by signing up for our free ... A venous lake is usually easy to diagnose clinically by its appearance. The colour disappears on compression of the macule or papule due to the clearance of blood from the dilated venule. This is most easily seen using a glass slide or the lens of a contact dermatoscope. A venous lake has a structureless blue or purple appearance on …Measles vaccine induces long-term (probably life-long) immunity in most individuals. Vaccination schedules recommend a two-dose immunisation strategy; the first dose at 12–15 months of age, followed by a second dose at 4–6 years. Measles vaccine should not be given during pregnancy.It may cause discomfort or bleeding when passing bowel motions, and aggravate any tendency to constipation, particularly in children. Lichen sclerosus causes adhesions and scarring. The clitoris may be buried. The labia minora resorb/shrink. The entrance to the vagina tightens (introital stenosis ).Hand dermatitis is frequently caused or aggravated by work when it is known as occupational dermatitis. Irritants include water, detergents, solvents, acids, alkalis, cold, heat and friction. These can damage the outer stratum corneum, removing lipids and disturbing the skin’s barrier function.Patches are round, oval or irregular in shape. Pityriasis alba may have well- demarcated or, more usually, poorly defined edges. Itch is minimal or absent. Hypopigmentation is more noticeable in summer. Dryness and scaling is more noticeable in winter when environmental humidity tends to be lower. Typically, a patch of pityriasis alba evolves ...Abrocitinib is an effective systemic therapy, easy to administer as an oral medication that can be taken with or without food, and usually well tolerated. In clinical trials, it reduces the severity of atopic eczema with significant clearing of the skin and rapid improvement of itch ( pruritus) when compared to placebo.Skin and soft tissue infections are a common complication of injecting recreational drugs. Cutaneous abscesses and cellulitis are common presentations in people who inject drugs (PWID), while necrotising fasciitis is a medical emergency. Cellulitis of the leg after skin popping. Necrotising fasciitis of the leg after a lower leg infection after ... Chronic spontaneous urticaria refers to chronic urticaria that has no specific cause or trigger. Weals are present on most days of the week for 6 weeks or more. Chronic spontaneous urticaria was previously referred to as chronic idiopathic urticaria. This term is no longer used as many cases have an autoimmune basis. The features in common for benign skin lesions include: Symmetry in shape, colour and structure. Stable or slowly evolving. Absence of spontaneous bleeding (bleeding or ulceration may be due to recent injury). Benign lesions can be classified by their cellular origin: melanocytic, keratinocytic, vascular, fibrous, fat, and so on, Erythema multiforme is an immune-mediated, typically self-limiting, mucocutaneous condition characterised by ‘target’ lesions . Significant mucosal involvement distinguishes erythema multiforme major from multiforme minor. Episodes can be isolated, recurrent, or persistent. In most cases, erythema multiforme is precipitated by herpes ...Hand dermatitis is frequently caused or aggravated by work when it is known as occupational dermatitis. Irritants include water, detergents, solvents, acids, alkalis, cold, heat and friction. These can damage the outer stratum corneum, removing lipids and disturbing the skin’s barrier function.Alopecia areata is typically diagnosed on clinical features, however additional tests may aid diagnosis. Trichoscopy : Examination of the hair follicle, hair shaft, and scalp with a dermatoscope. Features of active disease include exclamation point hairs, broken or dystrophic hairs, yellow dots and black dots.Anticholinergic (antimuscarinic) side-effects with glycopyrrolate or diphemanil methylsulfate, eg, dry mouth and dry eyes and temporary difficulty in focusing when applied to the face. Facial application should be avoided. Cyst formation. Associated with long-term antiperspirant use due to chronic plugging of the sweat glands and hair follicle.It affects the superficial layers of the epidermis and is typically caused by Staphylococcus aureus and Streptococcus pyogenes (Group A beta – haemolytic streptococci (GABHS)). It can be classified into non- bullous (also known as ‘school sores’) and bullous impetigo. Ecthyma is a deep form of impetigo causing … The features in common for benign skin lesions include: Symmetry in shape, colour and structure. Stable or slowly evolving. Absence of spontaneous bleeding (bleeding or ulceration may be due to recent injury). Benign lesions can be classified by their cellular origin: melanocytic, keratinocytic, vascular, fibrous, fat, and so on, Patches are round, oval or irregular in shape. Pityriasis alba may have well- demarcated or, more usually, poorly defined edges. Itch is minimal or absent. Hypopigmentation is more noticeable in summer. Dryness and scaling is more noticeable in winter when environmental humidity tends to be lower. Typically, a patch of pityriasis alba evolves ...Lipoedema almost exclusively affects women. Due to oestrogen receptors in the white adipose tissue, oestrogen is considered to be a major factor. Similar changes to lipoedema can occur in men with hormone disorders such as testosterone deficiency in association with cirrhosis of the liver and renal failure, testicular cancer, and hypogonadism .Folliculitis keloidalis, or folliculitis keloidalis nuchae, is sometimes called acne cheloidalis nuchae or acne keloidalis. These names are incorrect because folliculitis keloidalis is not acne and the scars formed are not …Tinea capitis is a fungal infection of the scalp, involving both the skin and hair. It is also known as scalp ringworm. Symptoms of tinea capitis include hair loss, dry scaly areas, redness, and itch. Tinea barbae is essentially the same condition involving the …Dermatologist – USA. One of the most easy, complete and comprehensive sources for dermatological conditions. Every topic is well written and covered completely. This site is my friend at the clinic. Thank you for your effort.dermnetnz .org. DermNet is a worldwide clinical resource website about dermatology and skin conditions. [1] Its co-founder and former editor-in-chief is dermatologist and Adjunct Associate Professor Amanda Oakley. [2] The website was launched in 1996 under the umbrella of the New Zealand Dermatological Society, and as of 2017, …Learn about seborrhoeic dermatitis, a common form of eczema that affects the scalp, face, and trunk. Find out the causes, symptoms, diagnosis, and treatment options for this … Mycosis fungoides (MF) represents 50% of all primary cutaneous lymphomas and 60-70% of all cutaneous T-cell lymphomas (CTCL). However, it is an uncommon condition with an estimated incidence worldwide of 6.4 per million. Onset is usually in late adulthood ( median age 55–60 years) with a male predominance (2:1) in white patients. See full list on dermnetnz.org dermnetnz .org. DermNet is a worldwide clinical resource website about dermatology and skin conditions. [1] Its co-founder and former editor-in-chief is dermatologist and Adjunct Associate Professor Amanda Oakley. [2] The website was launched in 1996 under the umbrella of the New Zealand Dermatological Society, and as of 2017, …Adults. Assess risk factors and comorbid disease of psoriasis at presentation and as indicated thereafter. Cardiovascular risk factors, and management of these (eg, smoking cessation ) Measure blood pressure, lipid studies and fasting glucose at least annually. Risk of venous thromboembolism and its management [1].Herpetic whitlow is self-limiting and usually resolves without any complications in 2–4 weeks. Recurrence is possible due to reactivation of the virus, which can be triggered by stress, other illness, or trauma to the skin or nails. Recurrent episodes are usually less severe than the primary infection. View images of herpetic whitlow.DermNet Cases. DermNet now features a library of authentic patient cases with images. These cover the various symptoms, diagnosis, treatments, and outcomes that can be expected in the real world. You'll find these cases listed below. All of our content is written by medical professionals and reviewed by dermatologists before …Prurigo simplex presents as symmetrically distributed, small, intensely itchy, dome-shaped bumps. Sometimes there are tiny blisters. They are most numerous on the outer aspects of the limbs and buttocks, but may occur anywhere on head and neck, trunk and limbs. Prurigo may affect children and adults. Aternative names for prurigo simplex include ...Skin as a barrier. Skin is the largest organ of the human body and comprises three major layers; epidermis, dermis, and subcutis [see Structure of normal skin]. One vital function of the skin is to form an effective barrier between the organism and the environment. It maintains an ‘inside-outside’ barrier regulating water loss, and an ‘outside-inside’ barrier …Intense pulsed light (IPL) or flashlamp therapy is a non- invasive and non- ablative treatment that uses high-intensity pulses of visible light to improve the appearance of the following skin problems: Vascular lesions including spider telangiectasis, port wine stains, broken facial veins, rosy cheeks, rosacea and red thread veins of the legs.A topical steroid is an anti- inflammatory preparation used to control eczema / dermatitis and many other skin conditions. Topical steroids are available in creams, ointments, solutions and other vehicles. Topical steroids are also called topical corticosteroids, glucocorticosteroids, and cortisone.Dermatologist – USA. One of the most easy, complete and comprehensive sources for dermatological conditions. Every topic is well written and covered completely. This site is …The solar (actinic) keratosis is the most common precursor lesion for squamous cell carcinoma. Histologically, atypical keratinocytes are found in the basal layer of the epidermis. Actinic keratoses are found on sun-exposed sites, mainly face, ears and hands. They are often multiple and have a hard scaly surface without induration …Alopecia areata is typically diagnosed on clinical features, however additional tests may aid diagnosis. Trichoscopy : Examination of the hair follicle, hair shaft, and scalp with a dermatoscope. Features of active disease include exclamation point hairs, broken or dystrophic hairs, yellow dots and black dots.Treatment for acne depends on the patient's age and sex, the extent and the severity of the acne, how long it has been present, and response to previous treatments. Treatment for mild acne includes topical anti-acne preparations, lasers and lights. Treatment for moderate acne includes antibiotics such as tetracyclines and/or …Dermatopathology is a subspecialty of pathology. Pathology is the study of diseases. It includes the study of the causes, course and progression and the complications that arise from the disease. Anatomic pathology, or histopathology, refers to the study of the structural and compositional changes that occur in organs and tissues as a result of ... Common wart. Common warts (verruca vulgaris) present as cauliflower-like papules with a rough, papillomatous and hyperkeratotic surface ranging in size from 1 mm to 1 cm or more. They may be solitary or multiple. Common warts are found most often on the knees, backs of fingers or toes, and around the nails ( periungual ). Lipodermatosclerosis is an inflammatory skin condition resulting from underlying venous insufficiency. This is caused by: Incompetent venous valves. Venous outflow obstruction. Dysfunction of the calf muscle pump [2]. The resulting venous hypertension causes an increase of leukocytes within the veins, which then migrate into surrounding tissue.Malignancy. Cutaneous cysts and pseudocysts are non- proliferative benign lesions. Nodulocystic basal cell carcinoma is a common skin cancer that presents as a rounded nodule and may initially be mistaken for a cyst, but steady enlargement, destruction of the epidermis with ulceration and bleeding occur eventually. dermnetnz .org. DermNet is a worldwide clinical resource website about dermatology and skin conditions. [1] Its co-founder and former editor-in-chief is dermatologist and Adjunct Associate Professor Amanda Oakley. [2] The website was launched in 1996 under the umbrella of the New Zealand Dermatological Society, and as of 2017, around 2 million ... . 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