Hyperthyroidism
Hyperthyroidism occurs when the thyroid gland produces too much thyroid hormone, speeding up metabolism. It causes weight loss, rapid heartbeat, anxiety, tremors, and heat intolerance. Graves' disease is the most common cause.
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Common Symptoms
Possible Causes
- Genetic and hereditary factors
- Environmental exposures or lifestyle factors
- Infections or immune system dysfunction
- Chronic stress or nutritional deficiencies
Risk Factors
- Family history of the condition
- Age and sex-related predisposition
- Pre-existing chronic conditions
- Lifestyle factors (diet, physical activity, smoking)
When to Seek Medical Help
- Symptoms are sudden, severe, or rapidly worsening
- Symptoms persist for more than 1–2 weeks without improvement
- Symptoms significantly affect daily activities or sleep
- You experience chest pain, difficulty breathing, or loss of consciousness
Related Symptoms
Hyperthyroidism is commonly associated with the following symptoms:
Medical References
Content on this page is informed by evidence-based clinical sources including:
- World Health Organization (WHO)Global health guidance and disease classification
- National Health Service (NHS)UK clinical guidelines and patient information
- National Institute for Health and Care Excellence (NICE)Evidence-based clinical practice guidelines
- Centers for Disease Control and Prevention (CDC)US public health data and clinical recommendations
- PubMed – NCBIPeer-reviewed biomedical literature and clinical studies
- Cochrane LibrarySystematic reviews and meta-analyses in evidence-based medicine
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