I was diagnosed with CIDP about about 15 months ago. I currently have IVIG every 4 weeks. Along the way, I have found that I don't tolerate heat so well and I perspire quite easily. My question is... I now have bouts where my body seems to do a fairly quick overheat, and then shortly after, I suffer from extreme loss of energy, to the point where I have sat on the floor of a supermarket because I couldn't make it to the car. I am male, 63yo, overweight, more so now than before diagnosis when I used to walk at least 5 km every night after work. Is there anything else that I can do?