Trichotillomania is estimated to affect up to 4% of the general population. It can affect males and females of any age but is more common in children than in adults. Peak of onset usually occurs in the pre-school years and also in early adolescence, usually around the time of puberty. In children, trichotillomania affects boys and equally ...
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Нүүрсний химийн найрлага (жишээ) Нүүрс нь хар, хар хүрэн өнгөтэй, амархан шатдаг нэгэн төрлийн "" шиг өнгөтэй чулуу юм. Нүүрс нь дээд ургамалын үлдэгдэл хүлэрээс үүсэх ба дотроо хүрэн нүүрс, чулуун нүүрс, антрацит гэсэн ...
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Notalgia paraesthetica is a form of cutaneous dysaesthesia where itch and/or changed sensation arise in the areas of skin on the medial aspect of the shoulder blade on either side of the back. Notalgia means pain in the back, and paraesthetica refers to burning pain, tingling or itch. It is also called thoracic cutaneous nerve entrapment syndrome.
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Links to DermNet's pages about skin conditions that favour the mouth (the oral mucosa, including lips, gums and tongue). Infections. Angular cheilitis; Chronic mucocutaneous …
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The usual presentation of the disease is classical lichen planus. Symptoms can range from none (uncommon) to intense itch. Papules and polygonal plaques are shiny, flat-topped, and firm on palpation. The plaques are crossed by fine white lines called Wickham striae.
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What are the clinical features of non-sexually acquired genital ulceration? Non-sexually acquired genital ulceration is usually preceded by a febrile illness, often a tonsillitis.. NSGU presents with one or more (usually 1-3) well-defined, deep, punched-out ulcers on the inner (mucosal) aspects and adjacent skin of the vulva, or penoscrotal area in males.
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Welcome to DermNet, the world's leading free dermatology resource. Scroll through evidence-based information on dermatological diseases (skin conditions), procedures, …
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Tinea corporis is spread by the shedding of fungal spores from infected skin. Transmission is facilitated by a warm, moist environment and the sharing of fomites including bedding, towels, and clothing. Dermatophyte infection elsewhere on the skin, such as tinea pedis, can also be transferred. The incubation period is 1–3 weeks.
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Apocrine bromhidrosis is the most common form of bromhidrosis in adults and is localised, usually to the armpits and/or anogenital area. Eccrine bromhidrosis presents as a generalised malodour, and may be associated with bad breath (halitosis), anogenital odour, and smelly urine. Inside the nose for foreign body.
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Bullous pemphigoid is the result of an attack on the basement membrane of the epidermis by IgG +/- IgE immunoglobulins ( antibodies) and activated T lymphocytes (white blood cells). The target is the protein BP180 (also called Type XVII collagen ), or less frequently BP230 (a plakin).
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Morphoea (American spelling, morphea) is characterised by an area of inflammation and fibrosis (thickening and hardening) of the skin due to increased collagen deposition. It is also known as localised scleroderma. …
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A keloid scar after cryotherapy to a chin viral wart. A thickened firm and tender post-surgical keloid scar. A small keloid on the upper arm. A retroauricular keloid. A keloid on the vulva. A large 'dumbbell' keloid on the earlobe. Post-acne keloids over the chest. A keloid on the helix after piercing.
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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 is followed some time later, typically two weeks or so, by the development of smaller scaly oval red patches, resembling a Christmas tree ...
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Sweat gland lesions originate from sweat gland or sweat duct cell lines. They are not often identified clinically before a biopsy. They are classified by their histological features. There are two types of sweat glands: eccrine glands and apocrine glands. Eccrine and apocrine glands, hair follicles, and sebaceous glands (which produce sebum ...
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Brachioradial pruritus presents as itch without rash, most commonly on the proximal forearm in the C6 distribution overlying the brachioradial muscle. It may be unilateral or bilateral, and may extend to adjacent dermatomes or skin sites, such as the shoulders, back, and chest. Secondary changes due to scratching and rubbing may include ...
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Ulcers on head and neck. Chondrodermatitis nodularis helicis (ear) Erosive pustular dermatosis (scalp) Aphthous ulcers (mouth and genitals) Aplasia cutis (scalp) Trigeminal trophic syndrome (nostril) Ulcerating skin cancers ( BCC, SCC, Melanoma)
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Acral lentiginous melanoma. Allergic contact dermatitis. Athlete's foot. Capillaritis. Chilblains and chilblain lupus erythematosus. Cracked heels. Diabetic foot ulcer. Dyshidrosis (pompholyx) Erythema multiforme.
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Skin Conditions. DermNet features a database of thousands of pages covering almost every known skin condition. You'll find these below along with pages on treatments, histopathology and general topics such as what is a dermatologist? All our content is written by medical professionals and reviewed by dermatologists before being published.. To get started, …
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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 ...
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What is psoriasis? Psoriasis is a chronic inflammatory skin condition characterised by clearly defined, red and scaly plaques.It is classified into several types. Who gets psoriasis? Psoriasis affects 2–4% of males and females. It can start at any age including childhood, with onset peaks at 15–25 years and 50–60 years.It tends to persist lifelong, fluctuating …
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Over 90% of cases of AGEP are provoked by medications, most often beta-lactam antibiotics (eg, penicillins, cephalosporins). Other drugs that may cause AGEP are reported to include: Paracetamol. The onset of AGEP is usually within 2 days of exposure to the responsible medication.
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What are the clinical features of guttate psoriasis? Acute onset over days. Numerous small patches (<1 cm) Pink, scaly, thin patches or plaques of psoriasis. Scale can be subtle in early lesions. Widespread lesions predominantly over the trunk and limbs. Lesions on the face, scalp, and ears tend to be faint and short-lived.
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New melanocytic naevi may erupt following the use of BRAF inhibitor drugs ( vemurafenib, dabrafenib ). People living in Australia and New Zealand have many more naevi than …
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