From the Editor

Agitated, excited, violent – when intoxicated. But my patient is also pleasant and engaging when not using substance (crystal methamphetamine).

Amphetamine use seems more and more common. What does the data show? In a new paper for The Canadian Journal of Psychiatry, James A. G. Crispo (of the University of British Columbia) and his co-authors look at amphetamine-related ED visits in Ontario. Drawing on administrative databases, they find a sharp rise over time: a 15-fold increase between 2003 and 2020. They write: “Increasing rates of amphetamine-related ED visits in Ontario are cause for concern.”

In the second selection, Dr. Ishrat Husain (of the University of Toronto) comments on psilocybin and depression in a new Quick Takes podcast. He goes into detail on the new NEJM study – which he co-authored. Dr. Husain discusses the literature and unanswered research questions. “It’s not necessarily all sunshine and rainbows.”

And in the third selection, Dr. Candace Marsters (of the University of Alberta) and her colleagues consider the unusual presentation of young adult with first-episode psychosis in a new paper for CMAJ. With time and diagnostic testing, they conclude that she has anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis, and offer observations about that diagnosis and the limitations of testing. “Anti-NMDAR encephalitis is a rare but important differential diagnosis of first-episode psychosis among young adults.”


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