Hypercalcaemia Management: Causes, Symptoms & Treatment Guide

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What is Hypercalcaemia?

Hypercalcaemia is a condition in which the level of calcium in the blood becomes abnormally high. Calcium is essential for bones, muscles, and nerves, but excess levels can disturb normal body functions and may become life-threatening if not treated promptly.

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Common Causes

The most frequent causes include:

  • Primary hyperparathyroidism (overactive parathyroid glands)
  • Malignancy (cancer-related hypercalcaemia)
  • Excess intake of calcium or vitamin D supplements
  • Certain medications (e.g., thiazide diuretics)
  • Prolonged immobilization
  • Chronic kidney disease

Symptoms of Hypercalcaemia

Symptoms vary depending on severity:

  • Nausea, vomiting, loss of appetite
  • Constipation
  • Excessive thirst and frequent urination
  • Fatigue and muscle weakness
  • Confusion or altered mental status
  • Kidney stones
  • Irregular heartbeat in severe cases

Diagnosis

Diagnosis is based on:

  • Blood tests (serum calcium, parathyroid hormone levels)
  • Kidney function tests
  • ECG (to detect heart rhythm changes)
  • Imaging (if malignancy is suspected)

Management of Hypercalcaemia

1. Immediate (Emergency) Management

For moderate to severe cases:

  • Intravenous (IV) fluids (Normal saline):
    Helps dilute calcium levels and increases urinary excretion
  • Loop diuretics (e.g., Furosemide):
    Used after hydration to promote calcium excretion
  • Calcitonin:
    Rapid but short-term reduction in calcium levels
  • Bisphosphonates (e.g., Zoledronic acid):
    Inhibit bone resorption; useful in malignancy-related cases

2. Long-Term Management

Depends on the underlying cause:

  • Parathyroid surgery for primary hyperparathyroidism
  • Treat underlying cancer if present
  • Adjust or stop causative medications
  • Maintain hydration and balanced diet
  • Monitor calcium levels regularly

3. Lifestyle & Home Care

Mild cases can be managed with supportive care:

  • Drink plenty of fluids (2.5–3 liters/day unless restricted)
  • Avoid excessive calcium or vitamin D supplements
  • Stay physically active (avoid prolonged bed rest)
  • Limit high-calcium foods if advised by a doctor
  • Reduce salt intake (helps reduce calcium loss from bones)

Dietary Tips (Indian Context)

Recommended:

  • Coconut water
  • Lemon water
  • Fresh fruits (apple, papaya, watermelon)
  • Green vegetables (in moderation)

Avoid Excess:

  • Dairy products (milk, paneer, cheese)
  • Calcium-fortified foods
  • Vitamin D supplements (unless prescribed)

When to Seek Medical Help

Seek urgent care if:

  • Severe vomiting or dehydration
  • Confusion or drowsiness
  • Chest pain or palpitations
  • Reduced urine output

Complications if Untreated

  • Kidney stones and kidney failure
  • Bone weakness (osteoporosis)
  • Cardiac arrhythmias
  • Neurological issues

Conclusion

Hypercalcaemia requires timely diagnosis and targeted management. Mild cases may improve with hydration and lifestyle changes, but severe cases need urgent medical treatment. Identifying and treating the underlying cause is the key to long-term control.

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