DEAR DR. ROACH: I ate some tilapia last night, and within an hour, I had nausea and a headache, then vomiting a few hours later, and now diarrhea.
What do you think is going on? -- V.P.
ANSWER: I would be interested if you felt any sensation of warmth on your face or neck or any flushing, as your symptoms are highly suggestive of a foodborne illness called scombroid poisoning. It most commonly happe…