| Re: Tiredness, worn out, sweating and being too hot... please help!
It's very possible that you have inherited your dad's overactive thyroid, but that your doctor just isn't recognizing it yet. Thyroid problems frequently go undiagnosed until lab tests scream something wrong, but the symptoms can begin well before that happens.
Hyperthyroid folks typically lose weight or can't gain it even with ravenous appetites, but this isn't written in stone. Hypers can still be overweight or gain easily.
Otherwise, your symptoms fit hyperT neatly. You're at a disadvantage in the UK, in that you're at the health system's mercy for obtaining the right tests. If you were here in the US, I would urge you to have the following tests: TSH, free T4, free T3, and TSI antibodies. If the antibodies are positive, it would show that you have the autoimmune form of hyperT, which commonly runs in families.
Autoimmune thyroid disease can take different forms in individual family members. It's also possible that you are actually hypOthyroid, even though your dad has hyperT. It's also possible that one can be hypOthyroid and suffer from the heat although it's most common for hypos to feel inappropriately cold. These kinds of symptoms can "cross over" from the hyper to the hypo side. HypoT goes undiagnosed more frequently than hyperT, so it wouldn't surprise me if your tests actually show this but your doctor isn't interpreting the tests well.
Good luck to you in pursuing this angle. If I'm wrong, I hope you'll get to the source of the trouble very soon.
Last edited by midwest1; 08-01-2007 at 07:53 AM.
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Tiredness, worn out, sweating and being too hot... please help! 
