Why does the Heat make Multiple Sclerosis worse?

Multiple Sclerosis is an autoimmune disorder. This auto-immunity, the tendency of the body’s immune system to offend its own tissues or organs, results in nerve damage in MS patients.

Studies report that about 60 to 80% of people diagnosed with MS show excessive sensitivity to heat. People with this neurological disorder experience a temporary exacerbation of their existing symptoms and also new disturbing symptoms when they are exposed to elevated temperatures. They are sensitive to even a slight increase in their core body temperature (0.25°C to 0.5°C) that may be due to physical exercise or a warmer environment.

But why does heat make MS worse? ...

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