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What is the impact of temperature on multiple sclerosis?

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Heat or high humidity can make many people with multiple sclerosis (MS) experience a temporary worsening of their symptoms. Doctors believe that this occurs because heat causes nerves (whose myelin covering has been destroyed from MS) to conduct electrical signals even less efficiently. Most people with MS avoid hot baths, hot showers, and heated swimming pools. For reasons that are not well understood, extremely cold temperatures and changes in temperature can also cause MS symptoms, usually spasticity, to flare.

SOURCES: 

National Multiple Sclerosis Society: "Heat & Temperature Sensitivity."

United States Department of Veterans Affairs -- Multiple Sclerosis Center of Excellence: "Keep Cool: Multiple Sclerosis and Heat Tolerance."

Reviewed by Neil Lava on September 16, 2018

SOURCES: 

National Multiple Sclerosis Society: "Heat & Temperature Sensitivity."

United States Department of Veterans Affairs -- Multiple Sclerosis Center of Excellence: "Keep Cool: Multiple Sclerosis and Heat Tolerance."

Reviewed by Neil Lava on September 16, 2018

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Do hot temperatures affect multiple sclerosis symptoms?

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