Most thyroid nodules do not produce any symptoms.
Although rare, nodules can press against other structures in the neck and cause symptoms, including:
- Difficulty swallowing or breathing
- Hoarseness or voice changes
- Pain in the neck
- Goitre (enlargement of the thyroid gland)
Hyperfunctioning thyroid nodules can lead to overproduction of thyroid hormones, also known as hyperthyroidism. Symptoms of hyperthyroidism include sweating, fast heart rate, weight loss, etc.
Thyroid nodules may also be associated with low thyroid hormone levels, or hypothyroidism.