Hi hnixon42, I have gone through your question , overactive thyroid or hyperthyroidism may show symptoms similar to those you stated above , but with out live examination and medical history it would not be suitable to come to any conclusion. Since , hyperthyroidism also does show various others symptoms (which i am mentioning below ) , i would like you to go through them and if you are experiencing many of such other symptoms , i would recommend you to consult nearst General physician immediately , and at most cases these issues come under control hence , you need not worry. the major symptoms of hyperthyroidism include : 1) hyperactivity 2)mood swings such as anxiety, irritability and nervousness 3)difficulty sleeping (insomnia) 4)feeling tired all the time (fatigue) 5)muscle weakness 6)needing to pass stools (faeces or poo ) or urine frequently 7)diarrhoea 8)unexplained or unexpected weight loss, despite having an increased appetite (though in a small number of cases the increase in appetite can lead to weight gain) 9)very infrequent or light periods, or periods stopping altogether I wish you get well Soon Dr.G.Gayatri Devi