What is the typical temperature range for immersion foot?

• A. 32-65 degrees F
• B. 0-32 degrees F
• C. 65-82 degrees F
• D. 100-120 degrees F

Answer: (A)

Immersion foot develops from prolonged exposure of the feet to cold, damp conditions, so management aims to avoid further tissue injury while relieving symptoms. Using water that is cool to mildly cold provides a safe, effective range for immersion because it helps reduce swelling and numbness without risking frostbite from freezing temperatures or delaying healing that warmer temperatures might cause. Temperatures in the 32–65°F range fit this balance, whereas colder temperatures near or below freezing can cause ice injury, and warmer temperatures above this range can worsen swelling and prolong recovery. In practice, the goal is gradual warming and thorough drying, with attention to skin color, sensation, and edema, and to seek medical care if symptoms persist or worsen.