Hot baths proved a critical clue for doctors puzzling over the cause of a woman’s ongoing nausea and vomiting, a case study reveals. 

For two years, the 23-year-old had been presenting to an ED every month with acute bouts of intractable nausea and vomiting, occasionally with abdominal pain. 

The woman had chronically uncontrolled type 1 diabetes, and so had been treated for diabetic gastroparesis with prokinetics, the US doctors wrote.  

But her admission of cannabis use, along with a disclosure that hot baths were the only remedy for the nausea, pointed doctors in the direction of cannabinoid hyperemesis syndrome (CHS).