Cannabinoid hyperemesis syndrome symptoms
Pro Research Analysisby 
Searched over 200M research papers
Key Symptoms of Cannabinoid Hyperemesis Syndrome (CHS)
Cannabinoid Hyperemesis Syndrome (CHS) is most commonly seen in people who use cannabis heavily and over a long period. The main symptoms include repeated episodes of severe nausea and vomiting, often described as cyclical or intractable vomiting that does not respond to standard antiemetic medications Deceuninck2019Lapoint2017Stubbs2023+5 MORE. Alongside vomiting, patients frequently experience abdominal pain, which is usually diffuse or colicky in nature Russo2024Deceuninck2019Lapoint2017+7 MORE.
Hot Water Bathing Behavior in CHS
A unique and distinguishing feature of CHS is the compulsive need to take hot showers or baths, which patients report as providing temporary relief from their symptoms Russo2024Deceuninck2019Lapoint2017+7 MORE. This behavior is so characteristic that it helps differentiate CHS from other causes of vomiting.
Additional and Associated Symptoms
Other symptoms that may be present include weight loss due to persistent vomiting, dehydration, and sometimes stress-related symptoms linked to activation of the hypothalamic-pituitary-adrenal axis . Some patients also develop environmental triggers, such as certain smells or foods, that can provoke symptoms, suggesting a conditioned response .
Symptom Relief and Course
Symptoms are typically relieved only by stopping cannabis use, with full recovery occurring after sustained abstinence Deceuninck2019Lapoint2017Stubbs2023+4 MORE. Temporary relief can be achieved with hot showers, but standard antiemetic drugs are usually ineffective Lapoint2017DeVuono2020Burillo-Putze2022+1 MORE. In some cases, medications like benzodiazepines, antipsychotics (such as haloperidol), or topical capsaicin cream may help manage acute symptoms, but these do not provide a permanent solution Lapoint2017Stubbs2023Burillo-Putze2022+1 MORE.
Diagnostic Challenges
CHS is often underdiagnosed or misdiagnosed, leading to repeated emergency department visits and unnecessary medical tests, as its symptoms overlap with other gastrointestinal disorders like cyclic vomiting syndrome Deceuninck2019Stjepanović2024DeVuono2020+3 MORE. Recognition of the pattern of chronic cannabis use, cyclical vomiting, abdominal pain, and relief with hot showers is key to diagnosis Deceuninck2019Lapoint2017Stubbs2023+5 MORE.
Conclusion
In summary, the hallmark symptoms of cannabinoid hyperemesis syndrome are recurrent, severe nausea and vomiting, abdominal pain, and a compulsive need for hot showers to relieve symptoms, all in the context of chronic cannabis use. The only definitive treatment is stopping cannabis use, which leads to resolution of symptoms. Early recognition of these symptoms is crucial to avoid unnecessary medical interventions and to provide effective care.
Sources and full results
Most relevant research papers on this topic