Migraine - Effective Hot / Cold Therapy Technique Migraine pain has been described as one of the worst pains anyone can suffer. Treating a migraine as soon as it starts is key to keeping them from escalating into a full blown excruciating headache. Arthritis - Efficient and Versatile Heat treatments, such as heat pads or warm baths, tend to work best for soothing stiff joints and tired muscles associated with arthritis. Heat is especially good for getting your body limber and ready for exercise or activity. Cold is best for acute pain, numbing painful areas and decreasing inflammation and swelling. Reusable - Pinch the silver disc inside the pad for quick activation