I am a 24 year old physically fit male, but I have a serious problems with heat intolerance and sweating. Several times throughout the day, my body will just suddenly start to feel extremely hot, regardless of external temperature. This then causes sweating all over my body for a few hours, along with the unpleasant heat sensation. This heat intolerance will also immediately arise whenever I exercise, regardless of external temperature. I have seen an endocrinologist, who had my TSH, T3, and T4 levels checked and said they are fine. I have thyroid nodules, but they are cystic and not responsible for excess thyroid hormone production. What else could be wrong with me? Possibly relevant information would be:
- I was a vegan for a few months before developing these symptoms.
- I also have diffuse hair loss on the top of my head.
- I also have loose stool and frequent bowel movements (2-3 times a day).
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