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Pityriasis rosea. What it looks like: Pityriasis rosea is a rash where oblong, red scaly patches develop typically on the chest in the back, says Dr. Zeichner. “The rash develops in streaks and ...
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 a rash are numerous, which may make the evaluation of a rash extremely difficult. An accurate evaluation by a provider may only be made in the context of a thorough history, i.e. medications the patient is taking, the patient's occupation, where the patient has been and complete physical examination. [citation needed]
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Three species of fungi cause 95% of dermatophytosis in pets: [citation needed] these are Microsporum canis, Microsporum gypseum, and Trichophyton mentagrophytes. Veterinarians have several tests to identify ringworm infection and identify the fungal species that cause it: Woods test: This is an ultraviolet light with a magnifying lens.
Pityriasis rotunda (pityriasis circinata, tinea circinata) Plate-like osteoma cutis; Plaque-type porokeratosis (classic porokeratosis, porokeratosis of Mibelli) Polyneuropathy–organomegaly–endocrinopathy–monoclonal gammopathy–skin changes syndrome (Crow–Fukase syndrome) Polyostotic fibrous dysplasia (Albright's disease) Popliteal ...
Pityriasis lichenoides et varioliformis acuta, a disease of the immune system; Pityriasis rosea, a type of skin rash Pityriasis circinata, Pityriasis rubra pilaris, reddish-orange patches (Latin: rubra) on the skin; Pityriasis versicolor, a skin eruption on the trunk and proximal extremities, usually caused by a fungus
The cause is unclear but believed to involve a number of genetic and environmental factors. [2] [4] Risk factors for seborrhoeic dermatitis include poor immune function, Parkinson's disease, and alcoholic pancreatitis. [4] [6] The condition may worsen with stress or during the winter. [4] Malassezia yeast is believed to play a role. [6]