During a medical history to find out whether you have hypothyroidism, your health professional may ask:

• Whether you have had any thyroid problems in the past or any other medical conditions (such as diabetes or anemia).
• About previous thyroid treatments (especially radioactive iodine treatment, radiation therapy, or thyroid surgery) and whether you have ever had previous exposure to radiation (therapy for cancer, facial acne, or a thyroid condition).
• Whether you are taking any medications.
• What your usual weight is and whether you have noticed any changes in your weight, particularly an increase in weight; also, whether your eating habits have changed.
• How regular your bowel movements are and whether you have noticed any changes, particularly whether you are constipated.
• Whether you have felt more tired than usual, felt weak, or had problems sleeping; whether you have had any problems concentrating or felt excited or moody; and whether you have an intolerance to cold.
• Whether there have been any changes in your menstrual cycles and whether you have infertility problems.