Psoriasis is an autoimmune disorder in which your skin produces skin cells much faster than normal. This causes them to build up into thick, flaky, itchy, inflamed patches.
There are several types of psoriasis, including plaque psoriasis, guttate psoriasis, nail psoriasis, inverse psoriasis, and several other types that are rare. Common areas of the body where psoriasis develops include the scalp, torso, arms, thighs, armpits, groin, and on the fingernails and toenails. There’s also the very painful psoriatic arthritis, in which both the skin and the nearby joints are stiff and inflamed.
While psoriasis most commonly appears in people between the ages 15 to 35, approximately 10% of people who develop psoriasis will be under the age of 10 when symptoms appear and 4% will have their first sign of psoriasis occur over the age of 60.
