Psoriasis Skin Disorder
Psoriasis is a chronic skin disorder affecting more than 4 million individuals, producing silvery, scaly plaques on the skin. The skin condition usually begins in adolescence and affects 2 percent of the population. The most common type of psoriasis is called “plaque psoriasis” (or psoriasis vulgaris), characterized by raised, inflamed lesions with silver-white scales. Other far less common forms include pustular, guttate, inverse, and erythrodermic psoriasis.
The condition is considered to be mild if only 10 percent or less of the body is affected; 10 percent to 30 percent indicates a moderate problem, and psoriasis over more than 30 percent of the body is considered to be severe. The location of the symptoms, more than the extent, influences how disabling the condition may be. Psoriasis only on the palms and soles of the feet can be physically disabling, while psoriasis on the face can be emotionally disturbing. Typically, a person with psoriasis experiences cycles of improvement and flares; the disease can go into remission for periods ranging from one to 60 years.