Some symptoms can be clues that your thyroid is not right. This applies whether you have already been diagnosed with thyroid disease or not.
In Colorado, a study was done of 25,000 people to see which symptoms of thyroid disease were most common.
Specificity means how often that symptom is present in those with thyroid disease. Sensitivity means how often people without thyroid lack that symptom. In other words, if you do not have a hoarse voice, this only means there is a 6.7% chance you do not have thyroid disease. If you do have a horse voice there is a 94.5 % chance you do have thyroid disease.
The curious thing about symptoms of thyroid disease is that there are none that you would have to be present. The other curious thing is that most symptoms that were common were symptoms that changed over a specific period of time.
Another quirk is that people tend not to have a large number of symptoms. Most have just between 1-4 total.
If you see any of these present, get your thyroid levels thoroughly checked, even if you are already on treatment.