Hypocalcemia is low calcium levels in the blood serum. The normal range is 2.1–2.6 mmol/L (8.8–10.7 mg/dl, 4.3–5.2 mEq/L) with levels less than 2.1 mmol/l defined as hypocalcemia. Mildly low levels that develop slowly often have no symptoms. Common causes include hypoparathyroidism and vitamin D deficiency.

Over time, hypocalcemia can affect the brain and cause neurologic or psychologic symptoms, such as confusion, memory loss, delirium, depression, and hallucinations. These symptoms disappear if the calcium level is restored.
  • Symptoms
  • Muscle cramps

    • Carpopedal spasm


    Numbness or tingling around the mouth

    or Numbness or tingling in hand

    or Numbness or tingling in shoulders arms or hands

    or Numbness or tingling in legs, feet, or buttocks




    A sudden and temporary alteration of muscle tone, movements or behavior


    Low blood pressure

    Irregular heartbeat

    Annoyed easily

    or Child is constantly crying

    Feeling moody

    or Anxiety

    or Depression

    Cough with mucus or without mucus

    or Whistling breathing

    Strained voice

    or Swallowing difficulties


    • Resting

  • Risk factors
  • Kidney failure or on dialysis

    Vitamin D deficiency

    Too little parathyroid hormone

    or Neck surgery

    Acute pancreatitis

  • Treatment
  • In patients with acute symptomatic hypocalcemia, intravenous (IV) calcium gluconate is the preferred therapy, whereas chronic hypocalcemia is treated with oral calcium and vitamin D supplements.
  • Recommended specialist
  • If you have Hypocalcemia, then visit a general internist as soon as possible.

    Contact a

    General internist

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