Fever therapy, also known as hyperthermia, is a medical treatment where a patient is deliberately induced to have a high fever. This method of treatment is believed to be effective in fighting off certain types of infections and even certain types of cancer. However, there are other terms that can be used to describe fever therapy such as thermal therapy, thermotherapy, hyperthermia therapy, and pyrotherapy. These terms generally refer to the use of heat to treat patients, either by inducing a fever or by applying heat directly to the target area. Despite the different names used, all these therapies essentially work on the principle of increasing body temperature to stimulate the immune system to fight off disease.