Contrast baths are used for ankle, foot, or hand problems to help
decrease inflammation and pain. They involve dipping the injured limb
alternately into cold and warm (not hot) water.
It is important to end a contrast bath with a soak in cold water
to help reduce swelling.
These baths can be continued at least daily for up to 2 weeks. But
if swelling and bruising last this long, a doctor should be consulted.
There is not much evidence that contrast baths work better than
ice, but the theory is that changing the temperature back and forth between
cold and warm creates a kind of pump. Heat causes blood vessels to get bigger
and cold causes them to get smaller. Alternating between heat and cold means
the blood vessels alternate between bigger and smaller. This change in blood
movement could help reduce inflammation and swelling, and that could improve
range of motion in the joint.
November 15, 2011
Adam Husney, MD - Family Medicine & William H. Blahd, Jr., MD, FACEP - Emergency Medicine
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