• Surriya C Ahmad, Christianna Sim, and Richard Sinert.
• Department of Emergency Medicine, SUNY Downstate, Kings County Hospital Center, Brooklyn, New York.
• J Emerg Med. 2019 Dec 1; 57 (6): e181-e183.

BackgroundHaff disease is a rare syndrome of rhabdomyolysis thought to be caused by a heat-stable toxin associated with the consumption of seafood from fresh or brackish water.Case ReportWe present the case of a patient with Haff disease who presented to the emergency department with nausea/vomiting, diarrhea, and myalgias after a seafood buffet. Initially, he was treated with i.v. fluids and antiemetics for presumed gastroenteritis, but his symptoms did not improve. He was found to have elevated aspartate aminotransferase and alanine aminotransferase, normal point-of-care ultrasound, urinalysis with large blood and no red blood cells, and an elevated creatine phosphokinase (CPK). He was admitted to the hospital to receive ongoing fluid resuscitation for rhabdomyolysis presumed to be from fish. Liver enzymes and CPK downtrended, and patient was discharged on hospital day 3. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Undiagnosed Haff disease has important clinical implications, including multi-organ failure and death. Always maintain a high level of suspicion for Haff disease in patients with symptoms suggestive of gastroenteritis, but complicated by minor liver function test elevations and dipstick positivity for heme, without significant numbers of red blood cells per high-power field, in the setting of recent seafood ingestion.Copyright © 2019 Elsevier Inc. All rights reserved.

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