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 joint pain: Joint pain is not a typical sign of overexposure to phototherapy. While psoriatic arthritis can occur in individuals with psoriasis, it is not directly linked to phototherapy overexposure. B. Increased body temperature: While phototherapy may slightly raise the body's temperature, a significant increase in body temperature is not a typical indication of overexposure. This could suggest another underlying issue, such as infection or heatstroke. C. Cool, moist extremities: Cool, moist extremities are not typically associated with phototherapy overexposure. This finding is more indicative of circulatory or other systemic issues, which do not directly result from phototherapy. D. Small blisters on the skin: Small blisters on the skin are a common sign of overexposure to phototherapy. Phototherapy uses ultraviolet (UV) light, and excessive exposure can lead to skin damage, including burns or blisters, similar to sunburn.