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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. Within the latter type, the hairs occur in structures called pilosebaceous units, each with hair follicle, sebaceous gland, and associated arrector pili muscle.
Psoriasis is a long-lasting, noncontagious autoimmune disease characterized by patches of abnormal skin. [4] [5] These areas are red, pink, or purple, dry, itchy, and scaly. [8] [3] Psoriasis varies in severity from small localized patches to complete body coverage. [3] Injury to the skin can trigger psoriatic skin changes at that spot, which ...
Antipruritic. Antipruritics, abirritants, [1] or anti-itch drugs, are medications that inhibit the itching (Latin: pruritus) often associated with sunburns, allergic reactions, eczema, psoriasis, chickenpox, fungal infections, insect bites and stings like those from mosquitoes, fleas, and mites, and contact dermatitis and urticaria caused by ...
Frequency. ~20% at some time [2] [4] 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] AD may also simply be called eczema, a term that ...
A case of hidradenitis suppurativa Hidradenitis Suppurativa can take the form of growths on the skin that are extremely painful and debilitating.. Hidradenitis suppurativa (HS), sometimes known as acne inversa or Verneuil's disease, is a long-term dermatological condition characterized by the occurrence of inflamed and swollen lumps.
Thalidomide, sold under the brand names Contergan and Thalomid among others, is an oral medication used to treat a number of cancers ( e.g., multiple myeloma ), graft-versus-host disease, and many skin disorders ( e.g., complications of leprosy such as skin lesions ). [6] [7] [8] Thalidomide has been used to treat conditions associated with HIV ...
1% of people [4] Vitiligo ( / ˌvɪtɪˈlaɪɡoʊ /) is a chronic autoimmune disorder that causes patches of skin to lose pigment or color. [1] The cause of vitiligo is unknown, but it may be related to immune system changes, genetic factors, stress, or sun exposure. [5] [6] Treatment options include topical medications, light therapy, surgery ...
Terminology Many authors use the terms dermatitis and eczema synonymously, and various dictionaries that treat the terms as differentiable nonetheless do not provide explicit criteria for differentiating them, as the aspects of inflammation, pruritus, and either exogenous or endogenous provoking agent all can apply to either term, and thus autoimmune components are not excluded from either ...