Symptoms of Psoriasis Symptoms of psoriasis vary from person to person, but some common ones are: Patches of thick, red skin with silvery-white scales that itch or burn, typically on the elbows, knees, scalp, trunk, palms, and soles of the feet.Some patients have a related condition called psoriatic arthritis, which can be characterized by stiff, swollen, or painful joints; neck or back pain; or Achilles heel pain.