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: Medicine
[{'content': 'True about thyroid storm - \nSelect and explain. \nA. Bradycardia, B. Hypehermia, C. Hypercalcemia, D. Hypotension', 'role': 'user'}, {'content': "Answer: B \nExplanation: Thyrotoxic crisis, or thyroid storm, is rare and presents as a life-threatening exacerbation of hypehyroidism, accompanied by fever, agitation, confusion, delirium, seizures, coma, vomiting, diarrhea, jaundice, hypeension, tachycardia or atrial fibrillation and in the older patients, cardiac failure. Thyrotoxic crisis is usually precipitated by acute illness (e.g., stroke, infection, trauma, diabetic ketoacidosis), surgery (especially on the thyroid), or radioiodine treatment of a patient with paially treated or untreated hypehyroidism. Reference : page 2297 Harrison's Principles of Internal Medicine 19th edition", 'role': 'assistant'}]