Psoriasis is a chronic autoimmune condition where the immune system becomes overactive, causing skin cells to multiply up to 10 times faster than normal, leading them to build up into raised plaques and scales. Beyond the classic red, scaly patches on the skin, symptoms can include itchy or sore skin, thickened or pitted nails, and stiff, painful joints (psoriatic arthritis). The treatment range is broad, starting with topical creams (corticosteroids), moving to phototherapy (light therapy), and escalating to systemic medications like oral drugs or advanced biologics that target the immune system. For comprehensive care, you should see a Dermatologist, ideally at a specialized skin hospital or clinic. The cost of advanced treatments like biologics is very high (thousands per month), making insurance crucial. Key guidance for managing flare-ups includes identifying and avoiding personal triggers like stress, infections, or certain medications, moisturizing daily, and adhering strictly to your prescribed treatment plan even when your skin clears.