Heat sensitivity is one of the most common experiences for people with MS, affecting between 60% and 80% of people. Even a tiny rise in core body temperature — as little as a quarter of a degree — can temporarily trigger or worsen symptoms. This is known as Uhthoff's phenomenon.
Common symptoms that can flare up when Show Full Answer
Heat sensitivity is one of the most common experiences for people with MS, affecting between 60% and 80% of people. Even a tiny rise in core body temperature — as little as a quarter of a degree — can temporarily trigger or worsen symptoms. This is known as Uhthoff's phenomenon.
Common symptoms that can flare up when overheated include:
- Fatigue
- Muscle weakness or spasticity
- Brain fog or difficulty concentrating
- Blurred vision
- Pain
As one MyMSTeam member put it, hot days feel "like trying to walk through Jell-O and everything hurts." The good news is there are ways to cool down quickly when heat hits. Try:
- Drinking cold water or sucking on ice cubes/popsicles
- Taking a cool shower (start lukewarm, then gradually lower the temperature)
- Misting yourself with cold water
- Moving to an air-conditioned space
Symptoms from heat are usually temporary and tend to ease once the body cools down. It's always a good idea to talk to your neurologist about a plan that works best for you.
AI-generated responses are not a substitute for medical advice. These services are not intended to
diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.
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