Overview
- The update took effect Oct. 1 and was adopted by the CDC, giving clinicians a dedicated code to identify and study CHS.
- National JAMA analyses report emergency-department visits rose sharply since 2016, peaking during 2020–21 and remaining elevated.
- Adolescents and young adults show the largest increases, with teen visits rising more than tenfold through 2023 and adults 18–35 driving recent spikes.
- Patients present with cyclical severe vomiting, abdominal pain and compulsive hot bathing; ED care centers on anti-nausea drugs and IV fluids, but lasting relief requires stopping cannabis.
- Researchers cite rising THC potency and greater access as likely contributors yet stress that causes and individual risk factors remain unclear, with improved coding expected to refine surveillance and prevention.