Psoriasis is a chronic autoimmune skin disorder characterized by rapid overproduction of skin cells, leading to thick, red patches covered with silvery scales. It commonly affects the scalp, elbows, knees, and lower back but can occur anywhere on the body. The condition results from an overactive immune response that accelerates the skin cell life cycle, causing buildup on the surface. Symptoms may include itching, burning, cracking skin, and, in some cases, joint pain when associated with psoriatic arthritis. Psoriasis often follows a pattern of flare-ups and remission and may be triggered by stress, infections, skin injury, certain medications, or environmental factors. While not contagious, it can significantly impact physical comfort and quality of life.