What Are the Signs and Symptoms of Thyroiditis?

Thyroiditis can cause either hyperthyroidism or hypothyroidism, or one followed by the other.

Common signs and symptoms of hyperthyroidism include:

  • fast heart rate (100-120 beats per minute, or higher)
  • nervousness or irritability
  • increased perspiration
  • muscle weakness (especially in the shoulders, hips, and thighs)
  • trembling hands
  • weight loss, in spite of a good appetite.

Common signs and symptoms of hypothyroidism include:

  • slow heart rate (less than 70 beats per minute)
  • feel slow or tired
  • drowsy during the day, even after sleeping all night
  • poor memory
  • difficulty concentrating
  • muscle cramps, numb arms and legs
  • weight gain
  • constipation
  • heavy menstrual flow.