 [ Symptoms ] what causes nausea and vomiting after eating in a teenage male my son is 17 and has had this issue before he was given nexium he was not able to take that medicine and it was changed to something similar it did help and he was on it for about a month he did not need it for a while and now the nausea and occasional vomiting after eating has started again [ Disease ] only thing i could think is puberty