Heat/Temperature Sensitivity. Many people with MS experience a temporary worsening of their symptoms when the weather is very hot or humid or they run a fever, sunbathe, get overheated from exercise, or take very hot showers or baths. Air Conditioning Can Ease Effects of Heat. People with MS who are planning to move to a National Multiple Sclerosis Society | 1-800-FIGHT-MS (1-800-344 Multiple Sclerosis Foundation Forum. Subject: "Heat sensitivity" Previous Topic | Next Topic I'm wondering what people do about heat sensitivity. I don't even live in a very hot Multiple Sclerosis. December 2001. WHAT IS MULTIPLE SCLEROSIS? Multiple sclerosis (MS) is a disease of the central nervous system (CNS), the nerves that comprise the brain and spinal cord. important components in producing fatigue. Heat also increases the chance for fatigue Heat/Temperature Sensitivity. Many people with MS experience a temporary worsening of their symptoms when the weather is very hot or humid or they run a fever, sunbathe, get overheated from exercise, or take very hot showers or baths. Air Conditioning Can Ease Effects of Heat. People with MS who are planning to move to a National Multiple Sclerosis Society | 1-800-FIGHT-MS (1-800-344 Multiple Sclerosis. December 2001. WHAT IS MULTIPLE SCLEROSIS? Multiple sclerosis (MS) is a disease of the central nervous system (CNS), the nerves that comprise the brain and spinal cord. important components in producing fatigue. Heat also increases the chance for fatigue Multiple Sclerosis. Multiple sclerosis (MS) is a chronic, auto-immune disease that destroys the from invasion of exogenous pathogenic heat, which combines with phlegm inside the