The case of a patient who developed catatonia one week following Lysergic Acid Diethylamide (LSD) ingestion is presented. The psychosis developed two days after the intake. The catatonic syndrome resolved dramatically following one treatment of electroconvulsive therapy (ECT). This is perhaps the first case report of catatonia following the use of LSD. The need for a diagnostic category of organic catatonia is highlighted.

The case of a patient who developed catatonia one week following Lysergic Acid Diethylamide (LSD) ingestion is presented. The psychosis developed two days after the intake. The catatonic syndrome resolved dramatically following one treatment of electroconvulsive therapy (ECT). This is perhaps the first case report of catatonia following the use of LSD. The need for a diagnostic category of organic catatonia is highlighted.