A. This is often a normal behavior and would not be considered a sign of an eating disorder at this age.
In an infant that is otherwise growing and developing normally, as long as you don't reinforce it, it should eventually stop.
How would you reinforce it? For example, you could:
- get very upset, overly excited, or mad
- aggressive in telling her to stop doing it
- keep pulling her fingers out of her mouth
Instead of making a big deal out of her vomiting, it would be better to stay calm and clean her up matter of factly and pretend that nothing happened.
It may also help to distract her and keep her hands busy if it seems like she is getting ready to make herself vomit, and keep her on a routine for meals, naps, and a bedtime, to make sure that stress isn't contributing to this behavior.
Other signs that this might be more of a medical problem might include that she wasn't eating well, was having trouble starting solid foods, was not gaining weight well, or if she was often fussy.
Even without other symptoms, if it increases or persists, a visit to her Pediatrician would also be a good idea.