About this condition
Hyperthyroidism is increased thyroid hormone production. Excess thyroid hormones may cause a racing heartbeat, hand tremor, sweating, heat intolerance, anxiety and weight loss despite usual eating habits. Symptoms differ in severity, so laboratory evaluation matters even when discomfort is mild.
Hyperthyroidism and thyrotoxicosis are not identical
Thyrotoxicosis describes excessive thyroid hormone effects in the body. It may result from increased hormone production or temporary hormone release during thyroid inflammation. Graves disease and overactive nodules are among the causes of hyperthyroidism. The cause determines whether antithyroid medications, other treatment or observation is appropriate.
How the condition is assessed
Tests commonly include TSH and free T4, sometimes free T3, and, when indicated, TSH receptor antibodies or other investigations. Tell the clinician about arrhythmias, heart disease, vision changes and medications. Do not start or stop antithyroid drugs on your own: they have specific indications and potential adverse effects.
Related topics: Hypothyroidism; Thyroid nodules.
Signs and symptoms
- Palpitations, an irregular heartbeat or hand tremor.
- Sweating, heat intolerance or irritability.
- Unintended weight loss and increased fatigue.
- Low TSH with altered thyroid hormone levels.
Diagnosis and tests
TSH, free T4 and sometimes T3 help evaluate excess thyroid hormone effects. Depending on the findings, TSH receptor antibodies, scintigraphy or ultrasound may be useful; each test answers a different question.
Care and treatment approaches
Management depends on the cause and may include medications that reduce hormone production, symptom relief or other methods. Blood tests and treatment tolerance require follow-up. Do not change prescribed treatment independently.
When to seek urgent care
High fever, a very rapid heartbeat, chest pain, severe shortness of breath, marked agitation or altered consciousness in someone with thyrotoxicosis requires immediate care. Call 103 in Ukraine; do not wait for an appointment.
Frequently asked questions
Why does the cause of hyperthyroidism matter?
Different causes of excess thyroid hormones need different treatment approaches.
Is thyroid ultrasound always necessary?
No. Ultrasound is considered according to examination and clinical indications, not merely a low TSH result.
Can I treat hyperthyroidism with iodine on my own?
No. Excess iodine can worsen certain thyroid conditions.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
