I am 31 years old, when I was 26, I was diagnosed with Graves Disease. I did not respond to the meds so I had radiation to "destroy" it. It has taken years for my levels to finally become balanced and I had been great for approx 1 1/2 years. For the past few months my symptoms have started to return, the forgetfulness, increased heart rate and especially the lethargy (severe tiredness). My husband actually has to ask if I am well enough to walk around our neighborhood, which is only .3 miles. This tiredness is effecting every aspect of my life, including work. My endo Dr. says that my thyroid levels are within normal limits, so I don't know what to do. I am non-functional and can't seemingly live a normal life. I am afraid to have children in fear that I can't physically deal with them. I can't beleive that all this is wtill my thyroid, something esle has to be wrong. I went to a Neurologist and had a battery of tests and everything was normal. ANy suggestions. I need help!