New-onset headache in an elderly man with uremia that improved only after correction of hyperphosphatemia ("uremic headache"): a case report

INTRODUCTION New-onset headaches in the elderly are usually secondary and rarely primary. We present the case of an elderly man with recent-onset headache due to uremic hyperphosphatemia and hypocalcemia. To the best of our knowledge, this is the first case report of its kind in the literature. CASE PRESENTATION We present the case of a 70-year-old Indian man with chronic kidney disease whose new-onset headache improved only when his hyperphosphatemia and hypocalcemia were corrected. He had diffuse, dense calcification of tentorium cerebelli and falx due to hyperphosphatemia. CONCLUSIONS This case report reinforces the importance of identifying the cause of a new-onset headache, particularly in the elderly, and treating it before blaming a tension headache or primary headache as the cause.