10 Optic Neuritis Symptoms
Reviewed: Dr. Mera
Symptom #7: Uhthoff’s Phenomenon
Uhthoff’s phenomenon refers to the worsening of symptoms in multiple sclerosis and other demyelinating conditions when the body becomes overheated from exercise, saunas, hot tubs, fever, or hot weather. It is thought to be due to the effect of rising temperature on the conduction of nerves.
As the body temperature increases, nerve impulses are slowed or blocked in a damaged nerve. Symptoms resolve once the temperature normalizes. In optic neuritis, patients may describe worsening of vision or loss of vision when their body temperature increases or during exercise.
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