A 43-year-old male presents with frequent urination, diffuse abdominal pain for 3 days, and a blood glucose greater than 500 mg/dL. Which condition should you suspect?

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When blood sugar climbs this high and the patient has polyuria with abdominal pain, think of a diabetic ketoacidosis picture. Insulin deficiency in DKA triggers ketone production, which leads to metabolic acidosis and dehydration from osmotic diuresis. Abdominal pain is a common GI symptom in DKA and can accompany nausea, vomiting, and tenderness, making the presentation look worrisome for other abdominal problems as well. The key driver is the combination of marked hyperglycemia with signs of dehydration and GI symptoms, which fits DKA even when glucose levels are very high.

Hyperosmolar state can present with extremely high glucose too, but it typically shows more pronounced dehydration and altered mental status with fewer GI symptoms. Hypoglycemia would present with low glucose, not this high. Acute pancreatitis tends to present with painful epigastric pain and lipase elevation, not specifically the osmotic diuresis pattern seen here.