This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
[{'content': "Carpal tunnel syndrome can be caused by the following except - \nSelect and explain. \nA. Diabetes Mellitus, B. Amyloidosis, C. Addison's Disease, D. Hypothyroidism", 'role': 'user'}, {'content': "Answer: C \nExplanation: Causes of carpal tunnel syndrome\n\nThere are many causes of carpal tunnel syndrome : -\n\n\nidiopathic: - This is the most common cause.\nPregnancy and menopause\nMetabolic : - Gout, Diabetes mellitus\nEndocrine : - Hypothyroidism, Myxedema, Acromegaly, Hyperparathyroidism.\nDeposition disorder : - Amyloidosis, Sarcoidosis, Rheumatid arthritis, Leukemia, CRF, Mucopolysaccharoidosis.\nAlcoholism\nLocal causes: - Malunited Colle's fracture, osteoarthritis of the carpal bones, synovitis of flexor tendon sheath, hematoma.", 'role': 'assistant'}]