@martinsmckinney I am so glad you mentioned this. I don’t notice if I have started sweating but I get pins and needles many times after a few minutes of exercise. It gets discouraging and I usually slow down until they go away. I think it’s something we just need to put up with

I am also an every day cyclists in Florida and this just started with me in the exact same way.I've tried drinking more,keep up on my nutrition, however I do j.g ave a gluten issue but that's out of my diet now.
Have you or anyone else found relief?

Hi! I’m wondering if you have an update? I found this thread through Google. I have been having the same symptoms you describe, with out the hives, for a few seconds when my back starts sweating either from exercise or heat. I have recently been diagnosed with a vitamin D deficiency, so now that I’m treating that we’ll see if it changes, but nevertheless, I’d like to know more about what might be going on. I’m also beginning to get pins and needles in my arms abd legs, seemingly at random. I’m just starting my diagnostic journey. Any suggestions help!

I have the exact same symptoms. What I noticed is that geographical location also makes a difference. I had less of this problem in Dallas Texas, but more of it in south Florida and now in Pennsylvania.