What are the types of psoriasis?
Classic plaques of psoriasis are seen in 80-90% of affected individuals.Erythrodermic psoriasis causes widespread inflammation and exfoliation of the skin over most of the body surface. It may be accompanied by severe itching, swelling and pain. It is often the result of an exacerbation of unstable plaque psoriasis.

When the skin lesions are filled with pus, it is called as pustular psoriasis. Sometimes psoariasis can involve the flexure folds of the skin such as genitals, armpits, under the breast. This is known as flexural psoriasis and is aggravated by friction and sweating. Guttate psoriasis is characterized by numerous small, scaly, red or pink, teardrop-shaped lesions that appear over primarily the trunk, but also the limbs, and scalp. Guttate psoriasis is often preceded by a streptococcal infection.

Psoriasis can also affect the joints and is known as psoriasis arthritis. Psoriatic arthritis can affect any joint but is most common in the joints of the fingers and toes. Psoriatic arthritis can also affect the hips, knees and spine (spondylitis)