Psoriasis

The following information is provided courtesy of the National Psoriasis Foundation.

Psoriasis is a chronic disease of the immune system that appears on the skin, usually in the form of thick, red, scaly patches.

It occurs when the immune system sends out faulty signals that speed up the growth cycle of skin cells. Psoriasis is not contagious.

There are five types of psoriasis: plaque, guttate, inverse, pustular and erythrodermic. The most common form, plaque psoriasis, appears as raised, red patches or lesions covered with a silvery white buildup of dead skin cells, called scale.

No one knows exactly what causes psoriasis. However, it is understood that the immune system and genetics play major roles in its development. Most researchers agree that the immune system is somehow mistakenly triggered, which causes a series of events, including acceleration of skin cell growth. A normal skin cell matures and falls off the body in 28 to 30 days. A skin cell in a patient with psoriasis takes only 3 to 4 days to mature and instead of falling off (shedding), the cells pile up on the surface of the skin, forming psoriasis lesions.

Please visit their website, National Psoriasis Foundation for much more information on this subject.