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The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin.
Keratosis pilaris (KP; also follicular keratosis, lichen pilaris, or colloquially chicken skin) is a common, autosomal-dominant, genetic condition of the skin's hair follicles characterized by the appearance of possibly itchy, small, gooseflesh-like bumps, with varying degrees of reddening or inflammation.
Hives, also known as urticaria, is a kind of skin rash with red, raised, itchy bumps. Hives may burn or sting. The patches of rash may appear on different body parts, with variable duration from minutes to days, and does not leave any long-lasting skin change.
Unlike most of the common and chronic skin conditions that are marked by increased plaques, bumps or redness, the disorder vitiligo is characterized by what’s missing: Namely, skin color.
Atopic dermatitis ( AD ), also known as atopic eczema, is a long-term type of inflammation of the skin ( dermatitis ). [2] It results in itchy, red, swollen, and cracked skin. [2] Clear fluid may come from the affected areas, which can thicken over time. [2]
The condition typically causes areas of skin with small inflamed bumps around hair on the body, the AAD says. This can happen if you shave your hair or if the hair follicle gets damaged from tight ...
Darier's disease (DAR) is a rare, inherited skin disorder that presents with multiple greasy, crusting, thick brown bumps that merge into patches. It is an autosomal dominant disorder discovered by French dermatologist Ferdinand-Jean Darier .
Scabies is caused by infection with the female mite Sarcoptes scabiei var. hominis, an ectoparasite. [3] The mites burrow into the skin to live and deposit eggs. [3] The symptoms of scabies are due to an allergic reaction to the mites. [2] Often, only between 10 and 15 mites are involved in an infection. [2]
Dermatographic urticaria. Dermatographic urticaria. Other names. Dermographism, dermatographism, dermatographia, skin writing. Specialty. Dermatology, allergy and immunology. Dermatographic urticaria is a skin disorder and one of the most common types of urticaria, affecting 2–5% of the population. [1] [2]
Epidermodysplasia verruciformis (EV) is a skin condition characterised by warty skin lesions. It results from an abnormal susceptibility to HPV infection (HPV) and is associated with a high lifetime risk of squamous cell carcinomas in skin.