What Causes Panic Attacks Along With Severe Hair Fall?

i am tired a lot of the time or just have no umph and need chocolate to get me going. I can't have too much chocolate or it will put me in overdrive and I then get panicky. My hair has been falling out as well. thyroid tests come back normal. I do have a thyroid nodules. I also have environmental sensitivies as well as with sugar.
what do you think?