When treating a sprain, how long should ice generally be applied?

Applying ice to a sprain is an important part of the initial treatment to help reduce swelling and manage pain. The guideline of 15-20 minutes is recommended because it strikes a balance between providing effective cooling to minimize swelling and preventing potential skin damage from prolonged exposure to cold. Ice should be applied for this duration, allowing for the optimal reduction of inflammation without risking frostbite or other cold-related injuries to the skin.

This time frame also facilitates better venous return after the ice application, allowing warmth to return to the area, which helps with blood flow and healing. Applying ice for shorter durations may not effectively reduce the swelling, while longer durations, such as 30 minutes, can be counterproductive due to the risk of damaging the skin or tissue from extended exposure to low temperatures. Hence, the choice specifying 15-20 minutes is the most appropriate in this context.