They had so many cases that the patient appearantly with a typical depressed face or things like affective disorders. They come to the clinic and says they may suffer from thyroid problem, worms inside their body, cancers etc. The most ridicous point is why the symptoms improved with levothyroxine is that because it does boost your metabolism so you feel little better. I also mentioned the same to my doctor, she said many people are being normal even they are hypothyroid. And she thinks I am simply abusing levothyroxine to feel better.
Yes what she said may be correct. Because everytime when I do some exercise/doing some enjoying thing I started not feeling bad but soon I will come back to the depressed zone again after the effect goes away. Eventually I gave myself with another option in my life is using SSRI. I basically tried all SSRI and sertraline is the one that gave me almost no side effect. Then I stopped my madness about thyroid.
When we treat disease, we do not what actually happened in your body or even your doctor doesn't know much about you as well. What doctor can do is simply following trained medical procedure and find out what is happening. Of course some doctor is more friendly because they are more experienced about what patient is actually on his mind and they may give a option that closer to what your mind think.
Hope this help.