Temperature can influence how an MS patient feels. The symptoms of the disease may get worse when the weather is very hot or humid. “Activities including sunbathing, getting overheated from exercise, or taking very hot showers or baths can have the same effect. For example, some people notice that their vision becomes blurred when they get overheated — a phenomenon known as Uhthoff’s sign. These temporary changes can result from even a very slight elevation in core body temperature,” says the National MS Society.
The organization cautions: “Some people with MS notice that symptoms, particularly spasticity, become worse in cold weather. It is generally recommended that people with MS who are sensitive to temperature try to avoid extremes of either hot or cold. Anyone considering a move to a ‘better’ climate should visit first to see if the climate change is, indeed, beneficial.”
Watch a National MS Society video featuring a discussion with Dr. Stephen Krieger who talks about less common symptoms of multiple sclerosis.