Cutaneous conditions

Acne, also known as acne vulgaris, is a long-term skin condition that occurs when dead skin cells and sebum clog hair follicles. Typical features of the condition include blackheads or whiteheads, pimples, oily skin, and possible scarring. It primarily affects skin with a relatively high number of oil glands, including the face, upper part of the chest, and back. The resulting appearance can lead to lack of confidence, anxiety, reduced self-esteem, and, in extreme cases, depression or thoughts of suicide.

Warts are non-cancerous viral growths usually occurring on the hands and feet but which can also affect other locations, such as the genitals or face. One or many warts may appear. They are distinguished from cancerous tumors as they are caused by a viral infection, such as a human papillomavirus, rather than a cancer growth.

Psoriasis is a long-lasting, noncontagious autoimmune disease characterized by patches of abnormal skin. These areas are red, pink, or purple, dry, itchy, and scaly. Psoriasis varies in severity from small localized patches to complete body coverage. Injury to the skin can trigger psoriatic skin changes at that spot, which is known as the Koebner phenomenon.

class of disorder that affects skin, hair or nails

Eschar (; ; ; or an eschar) is a slough or piece of dead tissue that is cast off from the surface of the skin, particularly after a burn injury, but also seen in gangrene, ulcer, fungal infections, necrotizing spider bite wounds, tick bites associated with spotted fevers and exposure to cutaneous anthrax. The term ‘eschar’ is not interchangeable with ‘scab’. An eschar contains necrotic tissue whereas a scab is composed of dried blood and exudate. thumbnail|Eschar on the back of the knee on a patient with lymphangitis caused by [[Rickettsia sibirica]] Black eschars are most frequently attribute

Morgellons () is the informal name of a self-diagnosed, scientifically unsubstantiated skin condition in which individuals have sores that they believe contain fibrous material. Morgellons is not well understood, but the general medical consensus is that it is a form of delusional parasitosis, on the psychiatric spectrum. The sores are typically the result of compulsive scratching, and the fibers, when analysed, are consistently found to have originated from cotton and other textiles.

medical condition

skin disease caused by bacteria, fungi, parasites or virus

medical condition

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Sclerodactyly is a localized thickening and tightness of the skin of the fingers or toes that yields a characteristic claw-like appearance and spindle shape of the affected digits, and renders them immobile or of limited mobility. The thickened, discolored patches of skin are called morphea, and may involve connective tissue below the skin, as well as muscle and other tissues. Sclerodactyly is often preceded by months or even years by Raynaud's phenomenon when it is part of systemic scleroderma.

medical condition

mammalian protein found in Homo sapiens

Lichenification is a cutaneous condition caused by consistent irritation of the skin, such as scratching or rubbing, but can also be caused by friction from clothing or chemical irritants. Lichenification can develop from scratching existing skin conditions that cause itching such as eczema or psoriasis (secondary lichenification), but also appears on previously healthy skin when repeatedly aggravated (primary lichenification). Often times, in the case of primary lichenification, skin irritation is self inflicted due to psychiatric conditions, usually obsessive-compulsive disorder or anxiety d

Angiofibroma (AGF) is a descriptive term for a wide range of benign skin or mucous membrane (i.e. the outer membrane lining body cavities such as the mouth and nose) lesions in which individuals have: benign papules, i.e. pinhead-sized elevations that lack visible evidence of containing fluid; nodules, i.e. small firm lumps usually > 1 mm in diameter; and/or tumors, i.e. masses often regarded as ~8 mm or larger.

medical condition

softening and breaking down of skin resulting from prolonged exposure to moisture

excessive reactions to mosquito bites