Lack of thyroid hormone can result in various signs and symptoms including the following:[1]
- Fatigue and weakness
- Intolerance of cold temperature
- Decreased sweating
- Weight gain
- Depression
- Slowed heart rate
- Constipation
- Slowed movement, speech, and thinking
- Dry skin, brittle hair
- Swelling in the face and other body parts
- Goiter (enlarged thyroid)
- Joint and muscle pain
- Irregular menstrual periods and infertility in women