A client comes into the dermatology office and shows the nurse a rash she is very concerned about. The nurse examines areas of skin on the elbows and scalp that are inflamed and covered with silvery-white scales. The nurse determines this is most likely

  1. scabies.
  2. plaque psoriasis.
  3. urticaria.
  4. contact dermatitis.
Number 2 is correct.
Rationale: Plaque psoriasis is a noncontagious skin disorder in which plaquey areas of inflammation and silvery-white patches of skin develop on the knees, elbows, scalp, and back. Scabies present as a pimple-like rash. Urticaria is also known as hives and presents as red skin with areas of red itchy welts. Contact dermatitis causes skin to be red and inflamed without silvery-white scales.