Psoriasis is an autoimmune, inflammatory skin reaction that causes a rapid skin regeneration rate, characterized by thickened, red areas of skin covered with silvery scales. This can range from discrete, localized areas to generalized body involvement.
In up to 30% of psoriasis patients, there is an association with a characteristic arthritis (Psoriatic Arthritis), which can be debilitating. There is also a significant association between psoriasis and certain metabolic disorders that can include heart disease, hypertension, diabetes and obesity.
Things that can trigger psoriasis include: cuts and scratches, sunburn, infections like strep and others, medications that contain beta blockers, lithium and other irritants, seasonal weather changes, and dry skin.