Newborns often have gas if they are feeding too much, swallowing too much air or experience even a little lactose intolerance or acid reflux, says California pediatrician Carey Chronis. "All of these causes are not usually significant enough to cause a problem, but they can lead to an excessive amount of gas," notes Chronis. If your child is uncomfortable, evaluate the cause by allowing appropriate intervals between feedings to permit time for digestion or adjusting feeding techniques to cut down the air swallowed by your baby. If the gas causes great pain discuss treatment for lactose intolerance and acid reflux with your pediatrician, advises Chronis. Gas drops and prescription medication may be necessary if the gas is excessive.