my son who will be 4 ( 35lbs) on the 20th has always had promblems with vomitting and it seems not to be getting any better. He will only do it sometimes once a week and sometimes several times a week its always greenish yellow and when he starts it last usually 6-12 hours and constantly complaining of this or that hurting. Should i be worried?
Hi...by what you quote this looks like cyclical vomiting syn Chat Doctor.  He will require evaluation and an ultrasound abdomen as the kid is having green and bilious vomiting. I suggest you either consult your pediatrician or pediatric gastroenterologist regarding this. Regards -