This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cushing Syndrome, Subject name: Medicine
[{'content': 'All are true about the condition shown except? \nSelect and explain. \nA. Hyperpigmentation, B. Purplish striae, C. Hyperkalemia, D. Metabolic alkalosis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Presentation of Buffalo hump & Violet striae : Seen in CUSHING'S syndrome In Cushing's syndrome there is increase in coisol(three times) which activates the Epithelial Na+channels leads to more salt and water coming in, but more K+ and H+ loss leads to Hypokalemic Alkalosis (Metabolic Alkalosis) but NO HYPERKALEMIA Single midnight serum coisol measurement helps in diagnosis", 'role': 'assistant'}]