First reported case of cannabinoid hyperemesis syndrome during pregnancy
A 26-year-old pregnant woman at 10 weeks gestation presented with severe vomiting that was ultimately attributed to cannabinoid hyperemesis syndrome rather than typical pregnancy-related nausea.
Quick Facts
What This Study Found
This case report described a 26-year-old patient admitted at 10 weeks of pregnancy with severe nausea and vomiting unresponsive to standard antiemetic drugs. The key diagnostic clue was that compulsive hot bathing provided relief, a hallmark of cannabinoid hyperemesis syndrome (CHS).
CHS is a paradoxical reaction in long-term cannabis users where the drug that typically reduces nausea instead causes cyclic severe vomiting. The authors emphasized that before pursuing expensive medical workups for therapy-resistant hyperemesis in pregnancy, clinicians should ask about hot bathing behavior and cannabis use.
This was reported as the first documented case of CHS presenting during pregnancy.
Key Numbers
Patient age: 26. Gestational age: 10 weeks. This was described as the first reported case of CHS in pregnancy.
How They Did This
Single case report of a 26-year-old patient at 10 weeks gestation presenting with therapy-resistant vomiting. Clinical history, examination, and response to hot bathing were documented.
Why This Research Matters
CHS can be misdiagnosed as hyperemesis gravidarum (extreme pregnancy nausea), leading to unnecessary and expensive testing. Recognizing CHS in pregnant patients allows appropriate treatment and avoidance of unnecessary interventions.
The Bigger Picture
As cannabis use during pregnancy increased, recognizing CHS became increasingly important for obstetric care. Misdiagnosis as hyperemesis gravidarum could lead to inappropriate treatment while the actual cause (cannabis use) continues.
What This Study Doesn't Tell Us
Single case report. Cannot determine how common CHS is among pregnant cannabis users. The mechanisms underlying CHS were not well understood at the time.
Questions This Raises
- ?How often is CHS misdiagnosed as hyperemesis gravidarum?
- ?Does CHS pose specific risks to fetal development beyond those of cannabis use itself?
- ?Does pregnancy alter the likelihood of developing CHS?
Trust & Context
- Key Stat:
- First documented case of CHS during pregnancy
- Evidence Grade:
- Single case report. Establishes that CHS can occur during pregnancy but provides no data on prevalence or outcomes.
- Study Age:
- Published in 2011. CHS awareness has grown substantially since this early case report.
- Original Title:
- Cannabinoid hyperemesis syndrome: an underreported entity causing nausea and vomiting of pregnancy.
- Published In:
- Archives of gynecology and obstetrics, 284(5), 1095-7 (2011)
- Database ID:
- RTHC-00520
Evidence Hierarchy
Describes what happened to one person or a small group.
What do these levels mean? →Frequently Asked Questions
What is cannabinoid hyperemesis syndrome?
CHS is a paradoxical condition where long-term cannabis users develop episodes of severe, cyclic vomiting. Despite cannabis being known to reduce nausea, in susceptible individuals chronic use triggers the opposite response. Hot baths or showers characteristically provide temporary relief.
How can doctors tell CHS apart from normal pregnancy nausea?
Two key signs: the vomiting does not respond to standard anti-nausea medications, and compulsive hot bathing provides relief. Asking about cannabis use and bathing behavior can save time and money on unnecessary diagnostic workups.
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Cite This Study
https://rethinkthc.com/research/RTHC-00520APA
Schmid, Seraina M; Lapaire, Olav; Huang, Dorothy J; Jürgens, Frank Edwin; Güth, Uwe. (2011). Cannabinoid hyperemesis syndrome: an underreported entity causing nausea and vomiting of pregnancy.. Archives of gynecology and obstetrics, 284(5), 1095-7. https://doi.org/10.1007/s00404-010-1811-8
MLA
Schmid, Seraina M, et al. "Cannabinoid hyperemesis syndrome: an underreported entity causing nausea and vomiting of pregnancy.." Archives of gynecology and obstetrics, 2011. https://doi.org/10.1007/s00404-010-1811-8
RethinkTHC
RethinkTHC Research Database. "Cannabinoid hyperemesis syndrome: an underreported entity ca..." RTHC-00520. Retrieved from https://rethinkthc.com/research/schmid-2011-cannabinoid-hyperemesis-syndrome-an
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.