I am a 25 year old female and have had sub clinical hyperthyroidism, with varying TSH levels for the last year and a half. I was first diagnosed when I was in an intensive work environment and I had a panic attack (the first and only in my life). The next day I went to the doctor and I had a fever, I was hypertensive (150/95), and my heart was over 100 bpm at rest. This followed a period of a few months of diarrhea 5x a day and sleeping only a few hours every night. I attributed it to stress. The doctor did blood work and found that my TSH was .2. He put me on a low dose of propranolol and referred me to an endocrinologist. The ultrasound showed nodules. The thyroid uptake scan indicated inflammation. The endocrinologist has seen me every few months, and my TSH has been as high as .8 and the lowest is .3. I can recognize when I am hyperthyroid, and have managed with taking propranolol as needed. I feel fine when my TSH returns to a higher level. More recently, I have moved and started an intense school program. I started having hyperthyroid symptoms and have had severe anxiety and only slept a few hours a night and had diarrhea up to 10x a day, and lost 10 lbs in a few weeks. I felt so ill that I could not stay in school. I had my thyroid tested and the TSH was .3; however, my new endocrinologist told me that it was an anxiety disorder and that while all the tests (TSH, free T3 and T4) showed mild hyperthyroidism (I do not test positive for Grave’s), my results were inconclusive because I was on the pill. My questions are: Is this all psychological or is there a possibility that a person can be this affected by mild hyperthyroidism? Also, do you have any ideas as to why I might fluctuate in and out of normal every few months? I knew that free T4 numbers can be artificially elevated with the pill, but can TSH show hyperthyroidism because of the oral contraceptives? I am desperate to get to the bottom of this to prevent these episodes from happening again.