This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
[{'content': "Excessive secretion of ACTH causes: \nSelect and explain. \nA. Cushing's syndrome, B. Addison's disease, C. Myxoedema, D. Thyrotoxicosis", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A. Cushing's syndromeOverproduction of ACTH leads to Cushing's syndrome. It is characterized by hyper-pigmentation and increased production of adrenocorticosteroid. These symptoms lead to negative nitrogen balance, impaired glucose tolerance, hypertension, edema, muscle atrophy etc.", 'role': 'assistant'}]