What are the Signs and Symptoms of Hyperthyroidism?

The symptoms of hyperthyroidism are different for every person. Common symptoms include:

  • Nervousness or irritability
  • Weight loss
  • Increased appetite
  • More bowel movements than usual
  • Trouble sleeping
  • Sensitivity to hot temperatures
  • Sweating more than usual
  • Fatigue (tiredness)
  • Muscle weakness
  • Palpitations (from a very fast heart rate)
  • High blood pressure
  • Hand tremors (shakiness of hands)
  • Thinning of the skin
  • Fine, brittle hair
  • Prominent eyes
  • Irregular or lighter menstrual periods (in girls)
  • Enlarged thyroid gland (goiter)

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Rev. 11/2019. MassGeneral Hospital for Children and Massachusetts General Hospital do not endorse any of the brands listed on this handout. This handout is intended to provide health information so that you can be better informed. It is not a substitute for medical advice and should not be used to treatment of any medical conditions.