I found this information today and thought it was worth sharing. I have thyroid disease/hyperthyroidism (with nodules) and the similarities between the way I feel and function and many points in this article are quite interesting.

http://www.ngdf.org/cms/modules/files/uploads/7699.PDF

Someone may say they're depressed but have never had thyroid problems or thyroid symptoms. A person can have sub-clinical thyroid problems that a doctor very well might not even pick-up on.

I, for example, have major thyroid symptoms even though my test numbers are normal with medication. On paper my thyroid is "normal" but it does not function normally by any stretch of the imagination.

Many (perhaps most) thyroid patients also have mental health issues.