I know it can not be so and I know that this post won't give me a whole lot of answers, but I am just wondering about a little theory I have. I think weather changes has a role in my day to day health with MS. On days when the temperature changes more than five or so degrees from the day before, my body reacts awkwardly. It's like I endure some sort of mini-relapse that lasts until my body gets used to the new temperatures (usually a couple of days) which is usually a couple of days. I wonder what that is about....hmmmm!!! My brother also has MS and he seems to agree. When we talk on the phone on certain days where there is a change in the weather, I can detect in his voice that he isn't feeling his best. Of course I bring up my theory and finally now he says there may be something to it. Do either of you with MS experience this?