If hyperthyroidism remains untreated or poorly controlled, it can lead to several serious complications:[cite: 3]
âĪïļ Cardiovascular Complications[cite: 3]
- Rapid heart rate (tachycardia)[cite: 3]
- Palpitations[cite: 3]
- Atrial fibrillation (irregular heartbeat)[cite: 3]
- High blood pressure[cite: 3]
- Heart failure (especially in older adults)[cite: 3]
ðĶī Bone and Muscle Complications[cite: 3]
- Osteopenia and osteoporosis[cite: 3]
- Increased risk of fractures[cite: 3]
- Muscle weakness and muscle wasting (thyrotoxic myopathy)[cite: 3]
ð§ Neurological & Psychological[cite: 3]
- Anxiety and panic attacks[cite: 3]
- Irritability and mood swings[cite: 3]
- Insomnia, Tremors, Difficulty concentrating[cite: 3]
ðïļ Eye Complications (Graves' disease)[cite: 3]
- Bulging eyes (proptosis)[cite: 3]
- Dry, irritated eyes[cite: 3]
- Double vision, Vision loss (rare but serious)[cite: 3]
ð―ïļ Metabolic & Reproductive[cite: 3]
- Significant weight loss despite increased appetite[cite: 3]
- Heat intolerance, Excessive sweating[cite: 3]
- Irregular menstrual cycles, Reduced fertility[cite: 3]
- Pregnancy complications[cite: 3]
ðĻ Most Serious Complication[cite: 3]
Thyroid Storm:[cite: 3]
A rare but life-threatening emergency characterized by very high fever, severe tachycardia, agitation, confusion, vomiting, and diarrhea. Requires immediate hospitalization.[cite: 3]