What Are the Symptoms of Thyroid Problems?
Thyroid symptoms depend on whether the thyroid is underactive (hypothyroidism) or overactive (hyperthyroidism).
Hypothyroidism Symptoms (Underactive)
- Fatigue and sluggishness
- Weight gain
- Cold intolerance
- Dry skin and hair loss
- Constipation
- Depression and brain fog
- Slow heart rate
- Heavy periods
- Hoarse voice
Hyperthyroidism Symptoms (Overactive)
- Anxiety and nervousness
- Weight loss despite increased appetite
- Rapid or irregular heartbeat
- Heat intolerance and sweating
- Tremor
- Insomnia
- Frequent bowel movements
- Muscle weakness
- Bulging eyes (Graves' disease)
When to Get Tested
- Multiple symptoms from either list
- Family history of thyroid disease
- Autoimmune conditions
- Pregnancy planning
Source: American Thyroid Association, NLM MedlinePlus.
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