Psoriasis is a chronic autoimmune condition that causes the rapid buildup of skin cells, leading to thick, scaly patches that are often red and itchy. These plaques can appear anywhere on the body, commonly on the elbows, knees, scalp, and lower back. Psoriasis is triggered by the immune system and can be influenced by genetics and environmental factors. While not contagious, it can significantly impact quality of life.
Treatments include topical treatments, phototherapy, and medications that target the immune system to manage symptoms.