A nurse is caring for a client who is receiving phototherapy for psoriasis. Which of the following findings should the nurse identify as an indication of overexposure?

A. Increased body temperature is not a typical sign of phototherapy overexposure. B. Small blisters on the skin indicate skin damage or burns, which are signs of overexposure to phototherapy. This requires prompt attention. C. Cool, moist extremities are not related to phototherapy side effects. D. Increased joint pain is unrelated to phototherapy overexposure.