The patient should enter the bath at a temperature of 310C. The water temperature should be lowered gradually at the rate of 10C per minute until it reaches 250C. The bath should continue until the patient starts shivering. The graduated bath is intended to avoid nervous shock by sudden plunge into the cold water. This bath is often administered every three hours in cases of fever.
It effectively brings down the temperature except in malarial fever. Besides, it also produces a general tonic effect, increases vital resistances and energises the heart.
Certain precautions are necessary while taking these therapeutic baths. Full baths should be avoided within three hours after a meal and one hour before it. Local baths like the hip bath and foot bath may, however, be taken two hours after a meal. Clean and pure water must be used for baths and water once used should not be used again. While taking baths, temperature and duration should be strictly observed to obtain the desired effects. A thermometer should always be used to measure the temperature of the body. Women should not take any of the baths during menstruation. They can take only hip baths during pregnancy till the completion of the third month.