Celiac crisis in an adult type 1 diabetes mellitus patient presented with diarrhea, weight loss and hypoglycemic attacks

Type 1 diabetes mellitus (T1DM) is an autoimmune disease, characterized by loss of the insulin-producing β cells of the islets of Langerhans in the pancreas, causing insulin deficiency. Celiac disease has been seen in 3 to 8 % of T1DM patients. Celiac crisis, an acute severe onset of celiac disease, is a rare and life-threatening manifestation. We report a 50-year-old man with type 1 diabetes mellitus who arrived at our service with a 2-month history of watery diarrhea associated with hypoglycemic attacks, abdominal pain, and weight loss of 13 kg. The diagnosis of celiac crisis was made based on diarrhea leading to dehydration, severe metabolic and electrolyte abnormalities, and subsequent improvement after introduction of a gluten-free diet.