Hypercalcemia in a Patient with Systemic Lupus Erythematosus / 대한내과학회지

Hypercalcemia is a common clinical problem. The most frequent causes of hypercalcemia include primary hyperparathyroidism and malignancy; systemic lupus erythematosus (SLE) is a very rare cause of hypercalcemia. Here we describe a case of symptomatic severe hypercalcemia, which developed during a lupus flare. After treatment with intravenous fluids, diuretics, pamidronate, and hemodialysis, calcium levels normalized and were maintained on low-dose prednisolone treatment. To the best of our knowledge, this is the first case of hypercalcemia in a patient with SLE in Korea. Clinicians should consider lupus as a differential diagnosis for patients with severe hypercalcemia.