A 40-year-old woman presented to a general physician with a history of fibromyalgia. She was diagnosed with papillary thyroid carcinoma and underwent thyroidectomy one month before. Shortly after the surgery, she developed muscle cramps, tingling, stiffness and leg spasm.

Physical examination: Blood pressure: 102/74 mm Hg Heart rate: 62 beats/minute Laboratory findings: Low albumin corrected calcium levels: 7.3 mg/dl (8.5-10.5 mg/dl) Parathyroid hormone (PTH): 12 pg/ml Phosphate: 4.8 mg/dl (2.5-4.5 mg/dl) Vitamin D: 35 ng/ml Magnesium: 2.0 mg/dl  *This case is from the  Editorial team of Docplexus and is meant for educative purposes only. ##Disclaimer## The content provided on Docplexus is intended for educational purposes only. While we strive to ensure its accuracy, we make no warranties, explicit or implied, about the suitability, reliability, or adequacy of the information,…