Here's the forensic abstract report on the poor young woman who died sunbathing:
Fatal Hyperthermia Secondary to Sunbathing in a Patient With Multiple Sclerosis.
American Journal of Forensic Medicine & Pathology. 21(3):204-206, September 2000.
Henke, Alan F. D.O.; Cohle, Stephen D. M.D.; Cottingham, Sandra L. M.D., Ph.D.
A 27-year-old white woman with a history of multiple sclerosis was found dead lying on a lounger, clad in a bathing suit. She had been sunbathing for 4 hours. Significant autopsy findings consisted of numerous variably sized demyelinated plaques involving the periventricular cerebral white matter and cerebellum. Elevation of core temperature in patients with multiple sclerosis leading to transient or permanent adverse neurologic signs and symptoms has been documented for more than 60 years. This case illustrates that a modestly increased core body temperature, even from a usually innocuous activity such as sunbathing, may be fatal in patients with multiple sclerosis.
I dunno....I kept putting Jeff in the hot tub spa before his diagnosis, to help what I thought was a "pinched nerve." I probably could have killed him, since there have also been hot tub deaths linked to MS. He felt horrible after those hot tub soaks, dizzy. numb and exhausted. He also has alot of lesions in his cerebellum (body temp. center) But we live in LA, and he bikes and hikes on some pretty warm days and feels fine. The hot tub was extreme and prolonged heat.... 104 deg. for one half hour. Not so good. He's forgiven me
I suppose if heat sensitivity is part of your MS, and you have many cerebellum and white matter lesions, use caution.