Psoriasis is a comprehensive guide that explains the causes, symptoms, diagnosis, and treatment options for this chronic autoimmune skin condition. The article starts with an abstract and introduction, offering an overview of how psoriasis causes the immune system to mistakenly attack healthy skin cells, leading to the rapid buildup of scaly patches. It explores the different types of psoriasis, such as plaque, guttate, inverse, and pustular psoriasis, along with their unique characteristics. The guide also discusses the genetic factors involved, including genes like HLA-Cw6, and details the various treatment options, ranging from topical medications to biologics like adalimumab (Humira). Lifestyle management tips, such as identifying triggers and adopting healthy habits, are included to help readers manage the condition more effectively. The article is organized to take readers from understanding the basics of psoriasis to more in-depth information on living with and managing the condition. The information is presented clearly and simply to ensure it is easy for all readers to understand, including patients, caregivers, and the general public.