A 24-year-old-woman showed confusion, movement disorders and asthenia related to severe hypocalcaemia (0.95 mmol/l), with low parathyroid hormone concentration (4 pg/ml, normal 15–85 pg/ml) and hyperphosphataemia (1.97 mmol/l). She was hospitalised for depression 1 year previously, but no biological examination was performed during that period. Six years previously, asymptomatic hypocalcaemia (1.48 mmol/l) was diagnosed and the computed tomography scan at that time …