Sprouting that first tooth is a major milestone, but like many of baby's firsts, it doesn't come without some growing pains. Literally. (Hard teeth breaking through soft gums? Ouch!) Besides the discomfort, your kiddo may be dealing with a pile of unpleasant side effects, like interrupted sleep ,  rash, and Old Faithful–style drooling. Bottom line: Teething  can throw your and kiddo's world for a loop. The good news is, this gnarly stretch of time doesn't last forever -- and there are ways to make it more bearable for baby in the meantime.