The thyroid gland secretes a low number of thyroid hormones, causing disturbances in the body.
Patients with hypothyroidism are prone to fatigue, depression, concentration problems and weight gain.
The disease is found more often in women over 50.
The patients' skin is cold and looking pale.
The voice may become hoarse and women's menstruation may be accompanied by heavy bleeding over several days.
The hair can become rough.