@contentandwell , Thank you for your time! I have already been to UCLA about 3 years ago. Nothing but a big medical bill came out of that. My only other symptoms that may or may not be related is the feeling of hypoglycemia. I've had glucose tests and use glucose monitors for a couple months, and my blood sugar always looks normal, even though I feel weak, shaky and overall ill. Eating always makes me feel better when that happens.
My weight gain is also snowballing my condition. I can't exercise properly because of the overheating, which makes me gain weight, which then makes my overheating worse, etc. At this point, I have to pick between exercising for my health or working for a living. I can't do both because of how sick I get when I exercise. It's very frustrating, because I love being active. I actually fantasize about being able to ride a bicycle to work instead of driving. Yes, that's how bad it's getting. Riding a bike to work is a fantasy to me, like owning a Lamborghini is to others.
And thank you for the links! I have come across all those pages before, but I still revisit them, comb a little more, refine searches and click additional links. It's just so weird that I seem to have such specific symptoms that don't fit any known disease, and the closest possibilities have been checked several times and always proves negative.
I will be getting an MRI done on my head, but, you know, I'm really not expecting anything to show up. One more thing to check off the list, though.