Between 2016 and 2023, emergency department (ED) visits for cannabis hyperemesis syndrome (CHS) among adolescents aged 13 to 21 years rose significantly with an overall annual increase of 49%, as published in JAMA Network Open. The rate grew from 160.4 to 1,968.3 cases per 1 million ED visits over the study period. Out of 4,571 cases sampled, 27 patients were hospitalized with intensive care. States with recreational cannabis legalization had higher CHS encounter rates overall—1,909.5 …
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