• Mikio Nakajima, Masamitsu Shirokawa, Tomotsugu Nakano, and Hideaki Goto.
• Emergency and Critical Care Center, Tokyo Metropolitan Hiroo Hospital, 2-34-10, Ebisu, Shibuya-ku, Tokyo 150-0013, Japan. Electronic address: mikioh@ks.kyorin-u.ac.jp.
• Am J Emerg Med. 2018 Jul 1; 36 (7): 1326.e3-1326.e5.

AbstractFulminant type 1 diabetes mellitus progresses extremely rapidly and is accompanied by ketoacidosis. Patients with the disease present at emergency departments with non-specific symptoms, including fever, nausea, vomiting, and abdominal pain. Here, we present a case of fulminant type 1 diabetes mellitus where the patient was initially misdiagnosed with gastroenteritis and acute pancreatitis. A 50-year-old Japanese woman was referred to our hospital with coma and shock. She had presented with nausea, vomiting, abdominal pain and thirst from 5 days before admission, and had been misdiagnosed with gastroenteritis by her primary care physician. Upon examination, metabolic acidosis and remarkable elevation of pancreatic exocrine enzymes were found (amylase 4322 IU/L, lipase 1046 IU/L). Acute pancreatitis was initially suspected because of the high pancreatic enzyme levels and abdominal pain. However, her plasma glucose level was markedly elevated at 1357 mg/dL. The patient was diagnosed with fulminant type 1 diabetes mellitus. Computed tomography showed no radiological evidence of acute pancreatitis. In conclusion, fulminant type 1 diabetes mellitus is often referred to hospital with flu-like or gastrointestinal symptoms and elevation of serum pancreatic enzymes. Physicians must be sure not to misdiagnose it as gastroenteritis or acute pancreatitis.Copyright © 2018 Elsevier Inc. All rights reserved.

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