Hi everyone, I am 25 now and had a full thyroidectomy last year after two failed radioactive treatments. Now I am on 100 mg thyroxine. I was first diagnosed with hyperthyroidism when I was in high school around age 17-18. I have always wonder if anyone else ever experience or know why my body did what it did when I had hyperthyroidism. I had many many incidents where I would lose my balance, my legs would get very heavy and I would fall onto the ground. The couple seconds before I fall, would force my legs to walk and it would look like a drunk person trying to walk. I would shuffle my feet because I didn't have the control of bending my knees. But whenever I had to step over something or step down, that's when I would fall straight onto my knees then to the ground. I don't pass out or lose consciousness. Whenever I fall onto my knees, I have sit for a min and rest before I can get back up or if I'm with someone, they would help me up and get me to a chair then I'll be normal again. I did type the whole story of some of my incidents but it was too long. So I'm trying my best to describe it as much as I could cause I really don't know what it is or what caused it. I know most of these incidents happened when it was dark and couldn't see where my feet were going, and with people around or in a position where I am the main focus. I was a very shy person. I don't like public speaking. And I get very nervous when the attention is on me. I did ask my specialist about this but she never really told me what it was. She did asked me if I ate food before any of these incidents happened and yes I remember eating. I don't know if it's anxiety, or panic attack, or me fainting. I don't know. But I would like to know if anyone experienced this while being hyperthyroidism.