What are the possible causes of psoriasis?
Psoriasis is a chronic autoimmune condition that causes the rapid buildup of skin cells. This buildup of cells causes scaling on the skin's surface. Inflammation and redness around the scales is fairly common. Typical psoriatic scales are whitish-silver and develop in thick, red patches.
A psoriasis skin rash tends to itch, burn, and feel sore. Patches of psoriasis commonly occur on your knees, elbows, and on your scalp. The common skin rash seborrheic dermatitis (pictured) also causes scaly, itchy skin patches. It can occur on your scalp, where it may be called dandruff, or on your face and chest.
- Research suggests that people with psoriasis have a much higher risk of lymphoma, but researchers are puzzled as to why. Some studies suggest that having psoriasis increases your risk for developing certain cancers, including nonmelanoma skin cancers and lymphoma, a cancer of the immune system.
- Despite its very visible appearance on your skin, psoriasis is fundamentally an autoimmune condition, not a skin woe. Of the 21 autoimmune diseases studied, 17 were found to be linked to psoriasis, including alopecia areata, celiac disease, scleroderma, lupus, and Sjogren's syndrome.
- Trauma to the skin. In some people with psoriasis, trauma to the skin -- including cuts, bruises, burns, bumps, vaccinations, tattoos, and other skin conditions -- can cause a flare-up of psoriasis symptoms at the site of the injury. This condition is called "Koebner phenomenon." Alcohol.
Updated: 17th September 2018