Which condition is a contraindication to cryotherapy?

• A. Cryoglobulinemia
• B. Hypertension
• C. Mild dehydration
• D. Normal circulation and sensation

Answer: (A)

Cold exposure can be dangerous for conditions where proteins precipitate in the blood when cooled. In cryoglobulinemia, cryoglobulins become insoluble at low temperatures and can precipitate in small vessels, causing vascular occlusion, reduced blood flow, and tissue damage. Since cryotherapy cools tissue to very low temperatures, it can trigger these reactions, making it a contraindication. Hypertension, mild dehydration, or normal circulation and sensation do not involve cold-sensitive protein precipitation or acute vascular occlusion, so they are not contraindications to cryotherapy.