Often mistakenly called Cyclical Vomiting Syndrome, Cannabinoid Hyperemesis Syndrome is a rare form of cannabinoid toxicity that develops in chronic smokers. It’s characterized by cyclic episodes of debilitating nausea and vomiting.
Cannabinoid hyperemesis syndrome - Wikipedia (Severe withdrawals from Marijuana use. Yes it's a real thing. It's not just psychological. seeing my friend writhing with stomach cramps and vomiting so terrible )