Watch out! A heating pad can cause burns.
Several years ago, well experiencing severe abdominal pain, I used a heating pad for comfort. Warm heat can relax and ease the pain. I fell asleep. I burnt my side making the pain worse. I broke out in a rash that later was diagnosed as Shingles. The Shingles were made worse by the heating pad burn.
My daughter bought for me a simple heating items made by a women she works with to help keep the seniors residents from burning themselves with heating pads. I have worn out two, and I am making a couple new ones today. I thought this might be a good item to share with others. It is simple to make and requires no expertise in sewing.
Use one long tube sock; the ones I am using are 18" long. Fill with plain white uncooked long grain rice. I use about half of a 32 oz. Bag of rice. Fill the sock loosely. If the rice id tightly packed, it will not heat up evenly. Stitch the open end shut on a sewing machine. It is now ready to use.
Heat in a microwave for 1 minute 30 seconds up to 2 minutes depending on your microwave. Do not let the rice sock become wet. The rice will draw in the moisture and it will be ruined. I have learned to always place mine on a paper plate before placing in the microwave. That way if someone else forgot to dry out the inside of the microwave, my rice sock is safe. Once they draw moisture, you must throw them away.
If it feels too hot directly next to your skin use a small towel. It wraps around necks, knees, elbow and ankles easily and holds the heat for hours.