Detailed answer

Psoriasis is a chronic autoimmune disorder that causes skin cells to grow too quickly, resulting in red patches covered with thick, silvery scales. The most common symptom is the appearance of these patches on the elbows, knees, scalp, and lower back. These patches may be itchy, burning, or sore. Another symptom is the thickening and pitting of the nails, causing them to become discolored and crumbly. In some cases, psoriasis can also cause joint pain and swelling, known as psoriatic arthritis. It is important to note that the severity and symptoms of psoriasis can vary from person to person.