Methamphetamine-withdrawal catatonia resolved with mixed amphetamine salts: a case report.

Catatonia is a well-recognized psychiatric emergency with an evolving understanding of its underlying pathophysiology. However, withdrawal-associated catatonia remains poorly characterized. Here we describe a 32-year-old man with symptoms consistent with methamphetamine-withdrawal catatonia, a previously undescribed etiology, which resolved only after treatment with mixed amphetamine salts. The patient remained catatonic (Bush-Francis Catatonia Rating Scale [BFCRS] >10) for four months despite 38 sessions of electroconvulsive therapy, lorazepam up to 24 mg daily, and multiple augmentation strategies. An extensive medical and neurologic workup excluded alternative causes. Following initiation of mixed amphetamine salts, his BFCRS decreased from 15 to 6 within 48 hours, with sustained resolution and no recurrence of psychosis despite discontinuation of antipsychotics. This case suggests that methamphetamine withdrawal may represent an underrecognized cause of catatonia and that dopaminergic augmentation may have a therapeutic role in refractory cases.