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Pityriasis rosea is a type of skin rash. [2] Classically, it begins with a single red and slightly scaly area known as a "herald patch". [2] This is then followed, days to weeks later, by an eruption of many smaller scaly spots; pinkish with a red edge in people with light skin and greyish in darker skin. [4]
The causes of this condition have not yet been completely defined. [3] Patients are usually older persons. [4] The correlation of notalgia paresthetica localization with corresponding degenerative changes in the spine suggests that spinal nerve impingement may be a contributing cause. According to Plete and Massey, "The posterior rami of spinal ...
Other symptoms to note: The legions are usually itchy and may cause skin discoloration as they heal. Lichen planus does not have one single cause—illnesses, allergies, and stress can all trigger ...
It causes skin cells to grow rapidly and build up on the skin, causing itchy, scaly patches of thick, red skin. These psoriasis patches can occur everywhere — including the scalp.
Red and/or itchy bumps on the skin Anywhere and can be sprinkled randomly Erythema migrans / Lyme disease: Expands over days or weeks to 5–70 cm (median 16 cm), circular or oval, red or bluish, may have an elevated or darker center, may have a central or ring-like clearing, may feel warm, not painful or itchy [4] [5]
Scalp psoriasis is an inflammatory and chronic autoimmune disease and is a common cause of scalp scabs and discolored patches of skin on and around the scalp. It can also affect other parts of the ...
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]
The condition typically starts with an itchy patch of skin, but scratching the itch only makes the skin itchier. The itchiness may be more severe at night or when you're feeling relaxed.
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