When a school-age child presents with behavioral changes and physical complaints, hyperthyroidism must be differentiated from primary anxiety or behavioral disorders. The hallmark is a constellation of hypermetabolic and hyperadrenergic signs.
Key Assessment Findings
- Cardiovascular: Persistent resting tachycardia, palpitations, widened pulse pressure, and hyperdynamic precordium. A heart rate of 140 bpm in a 10-year-old is a red flag.
- Neurological: Fine tremors, jitteriness, hyperreflexia, and emotional lability that parents may describe as “nervousness” or “anxiety.”
- Constitutional: Weight loss despite a normal or increased appetite, heat intolerance, and excessive sweating.
- Ocular: Lid lag, stare, or proptosis, especially if Graves' ophthalmopathy is present.
- Neck: A palpable, smooth, non-tender goiter with or without a thyroid bruit.
Nursing Actions and Triage
- Immediate Priority: Obtain a full set of vital signs, including blood pressure. Evaluate for signs of thyroid storm if extreme tachycardia, hyperthermia, or altered mental status are present.
- Focused History: Document onset and progression of symptoms, family history of autoimmune thyroid disease, recent growth patterns on growth charts, and academic performance changes.
- Diagnostic Support: Anticipate orders for serum TSH (suppressed), free T4 (elevated), and T3 (elevated). Thyroid-stimulating immunoglobulin testing confirms Graves' disease.
- Patient Education: Explain that symptoms like jitteriness and rapid heart rate are physiological, not purely behavioral. Reassure families that medical management with antithyroid drugs or beta-blockers for symptom relief is effective.