help white spot on baby s lip babycenter my baby has blisters on their lip la cold sore or not january 2019 es hard white lump under baby s bottom lip white spots on inside lips of four week mouth ulcers hse ie baby mouth ulcers causes treatments blister on baby lip causes treatments mouth newborn nursery stanford cine lip tie and tfeeding white spot inside bottom lip babycenter small white p in baby s mouth what can es get blisters on their lips