Hi, we took my 8yo son on a roller coaster ride today and although he felt fine when it finished he started to feel sick and vomited 5 minutes later.  He has been vomitting every half hour since and also had diarrhea half an hour after the ride.  Is that all due to motion sickness?  He has now developed a fever and I am very concerned since we are currently on holiday in Malaysia far from home. I have sent my husband to get gastrolite but want to know if there is anything else I should do.  I keep giving him water also but he throws it up.
Hi there, It is unlikely that it was due to motion sickness, because of the diarrhea and fever.  It is probably a virus, or food poisoning.  The most important thing to do right now is to control the vomiting, because he can't keep deny Chat Doctor. Get an anti-vomiting medication like risperidone or metoclopramide from a local pharmacy, and give it to him immediately after an episode of vomiting to minimize the chances of him throwing it back up.  If he can keep it down for at least 30 minutes then it has a chance to work.  Don't take anything else in the meantime. Once that is controlled, get him to sip small amounts of plain water or rely