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Prurigo nodularis (PN), also known as nodular prurigo, is a skin disorder characterized by pruritic , ... (as opposed to papules which are less than 0.5 cm).
Prurigo is a reactive skin condition distinguished by numerous, isolated itchy papules. [1] The word "prurigo" comes from the Latin word pruire, which meaning itching. Ferdinand von Hebra coined the term "prurigo" in Vienna in 1850 to describe papules and nodules that had severe pruritus. [2] Some authors categorize prurigo based on its nature ...
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. [1] 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. [3]
Actinic prurigo is a rare sunlight-induced, pruritic, papular, or nodular skin eruption. Some medical experts use the term actinic prurigo to denote a rare photodermatosis that develops in childhood and is chronic and persistent; this rare photodermatosis, associated with the human leukocyte antigen HLA-DR4, is often called "Familial polymorphous light eruption of American Indians" or ...
The secondary scratch lesions can include abrasions, pimples, bumps, crusts and other lesions that can be caused by irritating the skin through pinching, rubbing or scratching which can cause scarring. [6] This most often appears in group two or group three patients.
The characteristic eruption is of multiple warty papules and nodules beginning on acral skin, especially the hands and wrists, and disseminating onto the skin of the entire body. These skin lesions develop on the trunk, extremities, and face. [1]: 63 Pruritus is also associated.
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