... ,bruises,minor burns,fevers and toothaches et.WarmingCold therapy:1,Do not use cold for more than 30 minute periods.2 ... people with circulatory problems unless prescribed by a physician.3,Do not apply to broken skin.4,If condition persists - consult ... observe swelling of the gel pack while it is heating, turn off the microwave immediately and wait for the swelling to subside ...