Pied et les orteils sur un homme âgé de 88 ans montrant champignon sur les ongles des orteils et le psoriasis à pied ainsi que l'onychomycose des ongles
5184 x 3455 px | 43,9 x 29,3 cm | 17,3 x 11,5 inches | 300dpi
Date de la prise de vue:
3 octobre 2012
Lieu:
anywhere
Informations supplémentaires:
Psoriasis (pron.: /sɵˈraɪ.əsɨs/) is an immune-mediated disease that affects the skin. It occurs when the immune system mistakes the skin cells as a pathogen, and sends out faulty signals that cause overproduction of new skin cells. Psoriasis is not contagious. However, psoriasis has been linked to an increased risk of stroke, and treating high blood lipid levels may lead to improvement. There are five types of psoriasis: plaque, guttate, inverse, pustular, and erythrodermic. The most common form, plaque psoriasis, is commonly seen as red and white hues of scaly patches appearing on the top first layer of the epidermis (skin). Some patients, though, have no dermatological signs or symptoms. The name psoriasis (ψωρίασις) is from the Greek language, meaning roughly "itching condition" (psora "itch" + -sis "action, condition"). In plaque psoriasis, skin rapidly accumulates at these sites, which gives it a silvery-white appearance. Plaques frequently occur on the skin of the elbows and knees, but can affect any area, including the scalp, palms of hands and soles of feet, and genitals. In contrast to eczema, psoriasis is more likely to be found on the outer side of the joint. The disorder is a chronic recurring condition that varies in severity from minor localized patches to complete body coverage. Fingernails and toenails are frequently affected (psoriatic nail dystrophy) and can be seen as an isolated sign. Psoriasis can also cause inflammation of the joints, which is known as psoriatic arthritis. Between 10—30% of all people with psoriasis also have psoriatic arthritis. Onychomycosis (also known as "dermatophytic onychomycosis, "ringworm of the nail, " and "tinea unguium" means fungal infection of the nail. It is the most common disease of the nails and constitutes about a half of all nail abnormalities. This condition may affect toenails or fingernails, but toenail infections are particularly common. The prevalence of onychomycosis is about 6-8% in people
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