My 31 year old son has always had a selective eating disorder eating only fries, chips, strawberry oatmeal, chocolate milk, apples, peanut better and crackers. He is overweight. He does not go to the doctor for checkups. Over the past 10 days he has vomited daily, after eating Anything = just now after having a chocolate protein drink. He does not want to even discuss going to the doctor. I am worried. Comments, suggestions?