A 70 year old man with multiple medical conditions including a recent pneumonia, a recent MI, and Parkinson's disease presents with nausea, vomiting, constipation, and diarrhea. On exam, his abdomen is so distended that it causes labored breathing. The abdomen is tympanic and bowel sounds are present. Labs show hypokalemia, hypocalcemia, and hypomagnesemia. Further workup excludes toxic megacolon and mechanical obstruction. The treatment is neostigmine.
Challenge: What is this eponymous disease?
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