Psoriasis is an autoimmune disease that causes raised, red, scaly patches to appear on the skin. It is associated with other serious health conditions like diabetes and heart disease. Psoriasis occurs when skin cells grow at an abnormally fast rate. It often develops between the ages of 15 to 35 but can occur at any age. Diagnosis is usually made through examination by a dermatologist, and there are different types and severities of psoriasis that can affect different parts of the body. Treatment options include topical creams and ointments, light therapy, oral or injected medications, and home remedies.