Too warm for you? Heat sensitivity explained!
Uhthoff's phenomenon is when changes in body temperature make a person's existing MS symptoms worse, even a rise of 0.25°C to 0.5°C in the core body temperature is enough to cause upsetting symptoms in those living with MS.
That thing people call ‘summer’
"It's just another one of those very paradoxical facts of life: as a person with MS, you lack vitamin D. The only way to get good vitamin D into your body is to spend time in the sun. If heat sensitivity is part of your long list of MS symptoms, though, you can't sit outdoors in the sun because your other MS symptoms get worse. Result? You choose to stay out of the sun, and therefore continue to lack vitamin D."