The main symptom of psoriasis is a rash on the skin. The rash is typically dry and flaky. In people with lighter skin tones, areas of psoriasis usually appear pink or red. In people with darker skin tone, psoriasis can appear pink, red, purple, or dark brown. The exact appearance of psoriasis, and the body areas affected, differs depending on the type of psoriasis. In the most common type of psoriasis - plaque psoriasis - psoriasis leads to raised, flat, dry and scaly areas (plaques), usually on the elbows and knees. Sometimes, the patches can be itchy or sore.
This is a companion discussion topic for the original article at https://patient.info/news-and-features/psoriasis-symptoms