Fever therapy is the use of abnormal elevations in body temperature as a tool to treat disease. This was done in the past by deliberately raising the patient’s temperature to cause fever. Fever therapy was pioneered by the Austrian neuropsychiatrist Julius Wagner von Jauregg (1857-1940) who inoculated the malarial parasite into patients with dementia paralytica, the third and final stage of syphilis when it affects the nervous system and brain. The patients developed malaria with a high fever and the fever halted the relentless course of the syphilis. In 1927 Wagner von Jauregg received the Nobel Prize in Physiology or Medicine. Fever therapy is rarely, if ever, used in the present day. Sometimes, however, a patient with a very high fever from an infection upon recovery from the infection enters into a seemingly impossible remission from an unrelated disease or is even cured of it!