Trench foot can lead to gangrene. For treatment, remove wet or constrictive items; gently blot dry the affected extremities; elevate and cover with dry/warm material.

Trench foot can go away after drying, resting, and warming the feet. It can cause permanent damage to the feet if left without treatment. This can result in amputation in extreme cases.

Already the trench-foot rate has been cut 75% simply by making the G.I.s take care of their feet, even in battle. Men are learning to dry their socks on bushes or in their jackets or helmets.