Severe symptomatic hypocalcemia due to Cyclospora cayetanensis infestation: A rare case

Introduction: Severe hypocalcemia can affect multiple systems, causing a wide variety of symptoms ranging from muscle weakness to twitching. In severe cases, it can lead to heart rhythm disturbances and seizures. A rare cause of hypocalcemia is due to malabsorption associated with prolonged gastroenteritis. Case presentation: . Her electrolytes were appropriately replaced during her hospital stay. The patient was successfully treated with trimethoprim-sulfamethoxazole, calcium, and oral iron supplementation. Conclusion: . This case emphasizes the importance of early diagnosis using newer techniques, such as polymerase chain reaction (PCR) for parasite DNA, which can result in appropriate diagnosis and timely treatment.