Toxic Thyroid Adenoma: Symptoms, Causes & Treatment

Toxic thyroid adenoma = a single overactive thyroid nodule ("hot nodule") causing hyperthyroidism.

Mechanism

One nodule enlarges and autonomously secretes excess thyroid hormones.

Symptoms (hyperthyroidism)

• Fast heart rate, increased sweating, weight loss despite normal eating
• Nervousness, anxiety, insomnia
• Appetite changes, hand tremors
• Irregular menstrual cycles (women)
• Warm, moist skin, muscle weakness/fatigue
• Goiter (enlarged thyroid)

Risk Factors

More common in middle-aged adults and women. Causes unclear; genetics, iodine deficiency, autoimmunity may contribute.

Treatment Options

• Radioactive iodine (RAI): Destroys overactive cells.
• Anti-thyroid drugs: Methimazole, propylthiouracil block hormone production.
• Surgery: Lobectomy or thyroidectomy if large/unresponsive.
• Beta-blockers: Control heart rate, tremors (propranolol, atenolol).
• Ongoing monitoring: Regular thyroid level checks.

Consult a healthcare professional for diagnosis and management.