ADAI Symposium: Cannabis Hyperemesis Syndrome Goes Mainstream

Save the date! 

The Dose Makes the Poison:
Cannabis Hyperemesis Syndrome Goes Mainstream

September 18, 2026

UW Tower, Seattle, WA

Hybrid event

In a recent survey of Washington State healthcare providers about cannabis negative effects, 70% of respondents reported seeing cases of severe abdominal pain, nausea, retching, and relentless vomiting among people reporting heavy cannabis use.

This cluster of symptoms is now recognized as Cannabis Hyperemesis Syndrome (CHS).

As CHS becomes more visible in clinical settings, providers are left navigating care without clear understanding or guidance. At the same time, while 1 in 10 Washingtonians who consumed cannabis in the last year report vomiting and nausea due to their cannabis use, many people remain skeptical that the condition exists at all, creating challenges for treatment, prevention, and health education.

To better understand these dynamics, we are making CHS the focus of this year’s ADAI Symposium.

Save the Date to join us online or in-person and learn about:

• CHS prevalence among adolescents and adults in U.S. emergency departments
• CHS in Washington State
• CHS as a contested disease and implications for health communication
• CHS presentation, treatment, and management across settings
• Policy recommendations to prevent CHS increase
• Improving care for individuals with CHS

Registration opens July 2026!