Have you ever gone through a phase in your life where you gained weight rapidly, or your energy plummeted, or your hair started to fall out? If so, these are some common signs of thyroid dysfunction.If you ever had these symptoms but went to your doctor and had labwork done, and everything came back in the normal ranges, then you are in the same boat as many other people. In most cases, doctors are only testing for one marker, known as TSH. This marker doesn't tell the entire story of the thyroid.In fact, even with a full thyroid panel done, it can give a practitioner a lot of information to work with, but it still doesn't tell the story of the thyroid. On top of other organ systems in the body that can impact the function of the thyroid, your emotional and mental state can also be a factor.