A 38-year-old man presented to the emergency department with facial paresthesias and upper-extremity muscle cramping. His symptoms were progressive, beginning as mild paresthesias on postoperative day 1 by the time he presented, they had been getting worse for about 24 hours. His medical history was noteworthy only for papillary thyroid carcinoma, for which he had undergone a total thyroidectomy 2 days earlier. Physical examination revealed apparent Chvostek's sign (Figure 1A and Video 1) and Trousseau's sign (Figure 1B and Video 2), a result of postsurgical acquired hypoparathyroidism. His total calcium level was 5.8 mg per deciliter (normal range, 8.4 to . . .
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Jesus et al. (2012) studied this question.