Dermatology is the medical branch that deals with diseases of the skin, including psoriasis. These diseases can manifest with skin rashes, itching, redness, or alterations of the skin. Psoriasis is a chronic autoimmune disease that causes the formation of thickened and scaly patches on the skin. Dermatology specialists diagnose and treat dermatological diseases using topical therapies, systemic medications, or innovative treatments such as light therapy. The goal is to alleviate symptoms, reduce inflammation, and improve skin health.