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: Medicine
[{'content': 'All are TRUE about hyperparathyroidism, except - \nSelect and explain. \nA. Commonly occurs after thyroidectomy, B. May cause hypercalcemia, C. Solitary adenoma is the most common cause, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thyroid crisis or storm -\n\xa0It is a rare disorder nowadays\xa0\nIt is an extreme form of thyrotoxicosis which is precipitated by stressful illness, thyroid surgery or Radioiodine administration.\n\xa0It presents with symptoms of thyrotoxicosis which are -\n\xa0Severe tachycardia, Arrhythmias\n\xa0Marked delirium\n\xa0Vomiting\n\xa0Diarrhoea\nDehydration\n\xa0High fever\n\xa0The mortality rate is very high.', 'role': 'assistant'}]