DS (16 months) has a known dairy intolerance. On Neocate and dairy free diet.
This evening was violently ill about an hour after dinner. Had same thing as sister, who wasn't ill. Didn't have anything he hadn't had before. Went to bed with a bottle of Neocate Advance.
Am wondering perhaps reaction to something he ate as within about an hour. But then may be a virus? He was quite sick, but then was fine, and happy again. No temperature and was drinking water.
How does one distinguish?