10 Symptoms of Multiple Sclerosis
Reviewed: Dr. Gromatzky
Symptom #8: Uhthoff’s Phenomenon
Uhthoff’s phenomenon refers to the worsening of neurologic symptoms in conditions such as multiple sclerosis or other neurological disorders. The symptoms worsen when the body’s temperature increases due to weather, fever, exercise, hot tubs, or saunas. It has been theorized that it potentially occurs due to the effects of temperature on nerve conduction. An increased temperature results in blocked or slowed nerve impulses, especially if the nerves are damaged.
Signs and symptoms usually improve or disappear once the body temperature normalizes. Patients with multiple sclerosis often experience increased pain, fatigue, difficulty concentrating, and urinary symptoms when exposed to higher temperatures.
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