symptoms of hyperactive thyroid
Some of the common symptoms of hyperthyroidism or hyperactive thyroid include: 1  Hyperactivity. 2  Extreme mood swings including irritability, anxiety, and nervousness. 3  Sleeping difficulty (insomnia). 4  muscle weakness. 5  feeling tiresome all the time (fatigue). 6  frequent urge to pass stools or urine. 7  diarrhea. 8  sensitivity to heat.