The recent dramatic rise in medical cannabis prescriptions within Australia is feeding a surge in hospital presentations for psychosis, a leading psychiatrist is warning.
Research from Associate Professor Stephen Parker, psychiatrist and clinical lead at Brisbane’s Metro North Hospital and Health Service’s early psychosis service shows one in 10 people referred to his services had recently been prescribed medical cannabis.
In each case, the patient had been using prescribed products containing high concentrate tetrahydrocannabinol (THC) in the preceding three months, he reported with colleagues in Australian Psychiatry (link here).
Concerningly, two of these patients continued to obtain prescriptions after the onset of psychosis, while four received a de novo prescription for high-concentrate THC after psychosis onset, according to the report.
“Our opinion is that these prescriptions complicated the treatment and recovery from the first episode of psychosis,” they wrote.
“We regularly have conversations with consumers and their families about the increasing public perception of medicinal cannabis as a harmless panacea being contrary to our clinical experience working at an early psychosis service.”
“There is a concerning lack of regulation allowing consumers to source medicinal cannabis, often from interstate online prescribers, without comprehensive assessment.