L.D.
Please see the gastrointestinal specialist for a proper diagnosis. There could be a problem with her esophageal muscle allowing food up her esophagus (throat) and causing reflux/vomiting. Otherwise diet is often the culprit. AS a teenager my husbands mother gave him orange juice with extra vitamin C in it for breakfast. He felt bad and vomited every day by his first period class - then he felt better. Never knew why. As an adult he learned he had reflux and excess acid in his stomach. The acidic orange juice and vitamin C (very acidic)was the worst thing in the world he could eat! His reflux ruined his teeth (most dentists thought it was grinding but it was acid etching away his enamel)and they have all been crowned. He has been on an acid reducer medication for years now and it's great. Regular vomiting can erode the esophagus and the teeth. Hopefully it's just diet which is easily fixable or she can be on an acid reducer if it's appropriate. Perhaps she could eat slower too. If she eats too much too fast she might be uncomfortable (from eating too much)and has found that vomiting makes her feel better. Eating over a longer period of time allows food to "register" properly and people rarely over eat. This is recommended for everyone in general by dieticians/doctors. Good luck!