Which basic safety precaution is essential when applying cryotherapy?

• A. Ignore numbness if pain decreases
• B. Protect skin from frostbite; monitor numbness and skin blanching; limit exposure time
• C. Always apply ice directly to skin for maximum effect
• D. Use heat sources after cryotherapy

Answer: (B)

The essential safety principle with cryotherapy is protecting the skin and underlying tissues from excessive cold by watching for signs of overcooling and by controlling how long the area is exposed. Keep the cold source separated from the skin with a barrier such as a towel or cloth to prevent frostbite. Be alert for numbness and skin blanching; these signs indicate that cooling is too intense or too prolonged, so stop the treatment and reassess. Limit the exposure time to the duration recommended for the specific modality and the patient’s tolerance, and reassess frequently. AfterCryotherapy, avoid applying heat immediately or forcing cooling beyond the intended session, as this can negate the therapeutic effect and risk further injury. By protecting the skin, monitoring sensory and color changes, and limiting duration, you minimize frostbite risk and maximize safety during cryotherapy.