Signs that your baby's green bowel movements might be caused by a medical condition could include that your baby is also fussy, gassy, has diarrhea, or is vomiting
. These additional symptoms could mean that
your baby has an infection, like rotavirus, or an intolerance to something he is eating. If your baby is breastfeeding, then green bowel movements with other symptoms could be a sign of an intolerance to something his mother is eating or drinking, like milk or cheese.