Guide — Endocrine
Parathyroid Disorders: Hyperparathyroidism & Hypoparathyroidism
The parathyroid glands have one job: keep calcium up by releasing PTH. So the disorders are really calcium disorders in disguise — too much PTH = high calcium, too little PTH = low calcium. PTH and calcium move together; phosphate moves the opposite way.
9 min read · Endocrine
Educational use only. Surgical, replacement, and treatment decisions are provider-directed and individualized. This is educational background for nursing care. This material supports nursing education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional policy, or medical direction. Always follow facility protocols and current provider orders.
Overview
The four parathyroid glands (behind the thyroid) secrete parathyroid hormone (PTH), the body’s main calcium-raising hormone. PTH pulls calcium from bone, reabsorbs it in the kidney, and activates vitamin D to absorb it from the gut — while pushing phosphate out. So when you know which way PTH is off, you know the calcium: PTH and calcium track together, phosphate runs opposite.
Key Concepts
Hyperparathyroidism → hyperCALCEMIA (low phosphate)
Primary is usually a parathyroid adenoma (autonomous PTH). Secondary is a compensatory PTH rise from chronic hypocalcemia — classically CKD. Excess PTH raises calcium and strips bone: findings are the hypercalcemia picture — “bones, stones, groans, and moans” (bone pain/fractures, kidney stones, GI upset/constipation, fatigue and confusion). Treatment of primary disease is often parathyroidectomy.
Hypoparathyroidism → hypoCALCEMIA (high phosphate)
Most often iatrogenic — accidental removal or damage of the glands during thyroid or neck surgery. Low PTH means low calcium: findings are neuromuscular irritability — tingling, muscle cramps, positive Chvostek and Trousseau signs, tetany, laryngospasm, seizures, prolonged QT. Treatment is calcium and active vitamin D (calcitriol), often lifelong.
The post-thyroidectomy emergency
After thyroid/parathyroid surgery, watch for acute hypocalcemia in the first 24–72 hours. Tingling around the mouth/fingers, a positive Chvostek/Trousseau, or stridor signals a falling calcium — keep IV calcium gluconate and emergency airway equipment at the bedside.
Assessment Findings
Hyperparathyroidism: elevated PTH and calcium with low phosphate; bone pain and fragility fractures, renal stones and polyuria, constipation/anorexia, muscle weakness, and fatigue/depression/confusion. Hypoparathyroidism: low PTH and calcium with high phosphate; positive Chvostek and Trousseau signs, perioral and fingertip numbness, muscle cramps/tetany, laryngospasm, seizures, and a prolonged QT. Always confirm with paired PTH, calcium, and phosphate levels.
Nursing Priorities
Hyperparathyroidism: hydrate, protect bones, manage post-op
For the hypercalcemia: aggressive IV fluids, mobility, and stone/fracture precautions (handle carefully, fall prevention). After parathyroidectomy, the pendulum swings — monitor closely for post-op hypocalcemia and airway compromise from neck swelling/hematoma.
Hypoparathyroidism: replace calcium, secure the airway
Give calcium and calcitriol; for acute symptomatic hypocalcemia, IV calcium gluconate on a monitor. Maintain seizure and emergency airway precautions (laryngospasm), and check Chvostek/Trousseau and the QT.
Trend the calcium-phosphate pair
Follow calcium, phosphate, and PTH together, and watch the ECG (QT) in both directions. After neck surgery, calcium is the priority lab.
Therapeutic Communication Considerations
Many patients are surprised that tiny glands they’ve never heard of explain bone pain, kidney stones, or post-surgery tingling. Use simple analogies (PTH is the calcium thermostat) and prepare surgical patients for what to report afterward — perioral numbness or muscle spasms. For lifelong hypoparathyroidism, support adherence to calcium and vitamin D and the need for routine monitoring.
Patient & Family Education
For hyperparathyroidism: hydration, staying active, recognizing stones, and (after parathyroidectomy) reporting tingling/spasms or neck swelling and trouble breathing. For hypoparathyroidism: take calcium and active vitamin D as prescribed (often for life), eat calcium-rich foods, and report numbness, cramping, or a tight throat immediately. Reinforce ongoing calcium/phosphate lab follow-up for both.
NCLEX Pearls
- ✦PTH and calcium move together; phosphate moves opposite. HyperPARA → hyperCALCEMIA; hypoPARA → hypoCALCEMIA.
- ✦Hyperparathyroidism = bones, stones, groans, and psychiatric moans (the hypercalcemia picture); treat with fluids/mobility ± parathyroidectomy.
- ✦Hypoparathyroidism is most often iatrogenic — damaged glands during thyroid/neck surgery.
- ✦Post-thyroidectomy: watch for acute hypocalcemia (perioral numbness, Chvostek/Trousseau) — keep IV calcium gluconate ready.
- ✦Hypoparathyroidism treatment is calcium + active vitamin D (calcitriol), often lifelong.
- ✦After parathyroidectomy, the risk flips to hypocalcemia — calcium is the priority lab.
Related Resources
Standards & sources
Fact-checked Jun 20, 2026This page is written to align with American Diabetes Association (ADA) Standards of Care · American Association of Clinical Endocrinology (AACE). It is an educational summary, not a citation of any single document — always verify specific doses, values, and protocols against current guidelines and your facility policy. How we source content →