Psoriasis is a chronic skin disease, however, if not well controlled, in addition to skin lesions, complications of psoriasis in other organs in the body will seriously affect the patient's health.

Psoriasis increases the risk of eye problems such as uveitis. Uveitis is an inflammation of the inside of the eye that can cause eye pain, redness, blurred vision, sensitivity to light, and reduced vision.

Erythrodermic psoriasis is a severe form of psoriasis caused by inappropriate treatment, however this form is rare. In Vietnam, the incidence of psoriasis is about 5-7% of the total number of dermatological patients visiting dermatological clinics.