A 4-week-old baby girl came into the emergency room because she’d been fussy for a full day, and wouldn’t drink from her bottle. On further questioning, the parents said that she had not pooped for 3 ...

Newborns cannot blow their noses, and they are not great at breathing through their mouths either—so even a little mucus can sound dramatic. Pediatrician Cindy Gellner, MD, shares what is normal when ...