I have always hated the heat, even before I was diagnosed with MS, after Multiple Sclerosis and I were acquainted I became really sensitive to the heat. The heat made my symptoms flair or sometimes even started a relapse. This is known as “Uhthoff’s Phenomena” and most people with MS suffer from this. Basically, heat can slow down nerve conduction in the CNS which makes symptoms worse. I have not done any research on this yet but to me, what doesn’t make sense, are the claims I come across here and there that some people with MS like the heat and hate the cold, the cold makes them feel worse! I can understand how cold can make symptoms like spasticity worse but the MS itself? I have to look into that more.