Pheochromocytoma Multisystem Crisis Triggered by Glucocorticoid Administration and Aggravated by Citrate Dialysis.

Pheochromocytoma multisystem crisis is the most severe presentation of pheochromocytoma. We report on a 68-year-old survivor of pheochromocytoma multisystem crisis, whose clinical course was triggered inadvertently by a short innocuous course of oral dexamethasone to suppress inflammation and swelling after a left orbital floor fracture repair. He presented first with severe epigastric pain and headache, and subsequently experienced insults to neurological, cardiac, respiratory, hepatobiliary, renal, and immune system in his prolonged intensive care unit stay. We believe an episode of unexpected hypertensive crisis in the intensive care unit was set off iatrogenically during citrate protocol dialysis.