When cyclic vomiting pattern starts in young adults, the differential diagnosis is different than in toddlers.  A case in point is a recent think like a doctor column from NY Times.

The initial presentation described a 25-year-old man who gets sweaty and nauseated and starts vomiting uncontrollably every few weeks.

1st the link with the case challenge: challenged Well readers to figure out

A big clue in this case was the fact that hot showers ameliorated his symptoms.

Now the answer, full link: http://nyti.ms/1lcPJKj 

“The correct diagnosis is…

Cannabinoid hyperemesis caused by smoking synthetic marijuana.”

Related blog post: Diet or drugs for cyclic vomiting syndrome | gutsandgrowth