I am pretty much at my wits end.
I have many of the symptoms associated with hyperthyroidism but my bloods continue to come back normal.
For many years I have suffered from a severe intolerance to heat which makes the summers almost unbearable. To try and help with this I have tried to get regular exercise - but after a number of years regular cardio, I still find myself chronically out of breath with a sky-high heart rate even after just moderate exercise. The excessive sweating is also ever-present.
I have always been very thin and underweight which has never really changed regardless of my appetite. The worst symptom, however, is the constant fatigue - I always feel tired, but then I have difficulty sleeping. Upon waking I feel just as exhausted as the night before. The combination of these symptoms makes life pretty miserable to the point that I regularly consider giving it up.
When I first heard about the symptoms of hyperthyroidism is was as if a light had just clicked on. Suddenly I saw how all these odd feelings might be connected. However when I asked to be tested for the condition the results came back normal:
TSH 3.09 mu/L (Ref: 0.27-4.20)
2 weeks later:
TSH 2.20 mu/L
When I asked to be tested for the other levels, I was told that with a normal TSH this was unnecessary, but that instead they would check my thyroid peroxidase anti-body level:
63 iu/mL (Ref: less than 50)
Four weeks later:
Because these were slightly elevated my GP agreed to refer me to an Endocrinologist. However after an examination and more bloods he has told me that everything is normal and that my symptoms cannot be explained by my thyroid. The only abnormality with the results was a slightly elevated TSH of 6.84, indicating possible hypo!
Instead he has suggested I see a Counsellor for the tiredness, a dermatologist for the hyperhidrosis, and a heart specialist for the trouble with exercise!
This makes little sense to me. Can you tell me, is it possible to be hyperthyroid even with normal bloods? And is it worth me fighting to get an ultrasound or iodine uptake test, or am I just wasting my time?
I live in the UK.