Hypercalciuria: Difference between revisions
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==Background== | ==Background== | ||
*Defined as | *Increased excretion of calcium in the urine | ||
**Typically due to increased intestinal absorption, bone resorption, or kidney damage | |||
** | |||
Defined as urinary calcium excretion greater than 4 mg/kg per day OR greater than 250 mg/day in women and greater than 300 mg/day in men | |||
==Causes== | |||
*Idiopathic (most common cause, may be genetic) | |||
*Primary Hyperparathyroidism | |||
*Renal tubular acidosis | |||
*Bone Disease | |||
**Osteoprosis | |||
**Paget's Disease | |||
*Malignancy | |||
**Multiple Myeloma | |||
**Lymphoma | |||
*Sarcoidosis | |||
*Prolonged immobilization | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
Latest revision as of 18:50, 10 December 2025
Background
- Increased excretion of calcium in the urine
- Typically due to increased intestinal absorption, bone resorption, or kidney damage
Defined as urinary calcium excretion greater than 4 mg/kg per day OR greater than 250 mg/day in women and greater than 300 mg/day in men
Causes
- Idiopathic (most common cause, may be genetic)
- Primary Hyperparathyroidism
- Renal tubular acidosis
- Bone Disease
- Osteoprosis
- Paget's Disease
- Malignancy
- Multiple Myeloma
- Lymphoma
- Sarcoidosis
- Prolonged immobilization
Differential Diagnosis
- Kidney stones
- Nephrocalcinosis
- Dent's disease
- Hypercalcemia
- Vegan diet
- Hyperparathyroidism
- Vitamin D toxicity