What is ultraviolet therapy used for in physical therapy, and what is important about its dosing?

• A. X-ray therapy used to heat deep tissues.
• B. Ultraviolet light to enhance wound healing and skin conditions; used with careful dosing to avoid burns.
• C. Infrared therapy used to stimulate collagen production.
• D. Electrical stimulation to induce muscle contraction.

Answer: (B)

Ultraviolet therapy uses UV light to stimulate skin and tissue responses that can accelerate wound healing and help certain skin conditions. The dosing is crucial because UV exposure can easily overdo it, leading to burns, redness, and longer-term skin damage. In practice, clinicians tailor the dose to the patient’s skin type and condition, often starting at a conservative level based on factors like the minimal erythema dose, then gradually increasing exposure while watching the skin’s reaction. Controlling distance from the lamp, exposure time, and treatment frequency helps reach a therapeutic effect without causing harm. Eye protection and proper shielding of surrounding skin are essential during treatment. The other options describe different modalities (deep heating with X-rays, heat from infrared, or electrical stimulation), which are not ultraviolet therapy.