How is it promoted for use?
There are many medically accepted uses of hydrotherapy. Each involves water in the form of ice, liquid, or steam. Some of the more common examples of hydrotherapy include using water to clean wounds, use of warm moist compresses, ice packs, whirlpool or steam baths, and drinking water in order to prevent or reduce dehydration.
Warm compresses (heat packs) expand blood vessels, which can temporarily increase circulation, help to relax muscles, and reduce pain. Warm water in the form of a bath, massaging water jets, or hot tub also provides relaxation and stress relief. The water vapor produced by a humidifier can reduce the discomfort of minor sore throats and colds. Warm water vapor from a sauna, hot shower, or "sweat lodge" can warm and moisten the nose and breathing passages.
Hydrotherapy in the form of ice packs is used to reduce inflammation and swelling. The coldness constricts blood vessels and reduces circulation to the area, which helps to decrease swelling. The use of water for heating and cooling the body is also called hydrothermal therapy.
Dehydration, which can be a serious medical problem, is treated by giving water or liquids, either by mouth or intravenously.
Hydrotherapy is also used in physical rehabilitation and exercise. When performed in water, exercises can cause less strain on the bones and joints. The water also offers resistance to movement, which helps build muscle strength.
Some claim that warm water baths or cleansing baths boost the immune system, invigorate the digestion, calm the lungs, and stimulate the mind. Streams of warm water directed at different parts of the body are claimed to help headaches, nervous disorders, paralysis, and multiple sclerosis, as well as liver, lung, and gallbladder disease.