Heat applied after an injury can help restore and maintain
flexibility. You can apply heat with a hot water bottle, a heating pad set on
low, or a damp, heated towel. Do not apply heat to an injury sooner than 48
hours after the injury. To avoid burning your skin, do not apply anything that
is uncomfortably warm.
Some experts do not recommend applying heat to an injured area
because it may increase swelling. Others recommend heat to speed healing. Still
others recommend alternating between heat and cold treatments. If you decide to
use heat and you notice that the swelling increases, stop using heat and return
to cold treatments.
If you have diabetes or have areas of chronic numbness, do not apply
heat to injured areas unless your health professional has told you to do so.
Lack of sensation in the area could result in a burn.