Psoriasis vulgaris, also called plaque psoriasis and chronic stationary psoriasis, is the most common form of psoriasis which affects 80-90% of all psoriasis patients. This is a chronic, relapsing, and inflammatory skin condition with environmental, genetic and T-cell mediated (auto-immune) etiology.
This type of psoriasis is characterized by itchy, well-demarcated circular to oval bright red/pink elevated lesions with overlying white or silvery scale (plaque), that are equally distributed over the scalp and other areas of the body.
Scraping or scratching the lesions may result to pin-point bleeding (Auspitz’ sign). Fissures may also be observed when the lesions are located over skin folds. Lesions that are located on the lower extremities (legs and feet) may show a distinct bluish to violet color.
Since Psoriasis vulgaris is essentially Plaque psoriasis, please refer to our plaque psoriasis page for more information about its symptoms and treatment.