It could be anything from a little-bit-limp muscle tone to a shy personality that keeps your kiddo sitting tight instead of crawling. Maybe your little one isn’t talking because he’s got older siblings conveying his needs (“Hey, Mom, Jack’s diaper stinks!”). And it’s possible that he’s not outgoing with your in-laws because he doesn’t really like them, either. Just kidding—but you get the idea: It’s a unique combination of factors that motivates babies to reach milestones on time—or not. Usually there’s no reason to worry, but to be on the safe side, here’s a list of red flags you probably should bring up at your next doctor visit.
The Four-Month Mark
At the end of this newborn era, most babies are much more sociable and responsive than when they first crossed your home’s threshold. Mention it at her four-month checkup if your baby is still not:
- Responding to loud sounds.
- Smiling at not just family members but other people she encounters as well.
- Reaching and grasping toys.
- Following objects with her eyes.
- Supporting her head on her own.
The Eight-Month Mark
Between his four-month birthday and the end of the seventh month, your baby will change dramatically. He’ll start out quietly sociable but still unable to move much. The next thing you know he’ll be fully upright, boisterous, and able to get across the room in creative ways. Mention it to the doctor if by his eight-month-birthday:
- He still seems to have some of those quirky newborn movements like the Moro or tonic-neck reflex.
- His muscle tone doesn’t seem right—it’s either too stiff or too floppy— and he can’t seem to bear weight on his legs (when you hold him in a standing position with his feet on the floor) or hold his head steady when you pull his body up by the arms to a sitting position.
- He’s not cuddly or affectionate with the people who care for him, and doesn’t show interest in being around people in general.
- Something seems amiss with his eyes: They consistently cross, turn in or out, or tear a lot, or he can’t seem to follow an object with his eyes when you move it in front of his face.
- He does not turn to locate or otherwise respond to sounds.
- He doesn’t actively reach for objects and still can’t get them to his mouth (typically, everything is going into the mouth by the end of this stage).
- He hasn’t reached physical milestones like rolling over or sitting up at the end of this period.
- He still has a lot of difficulty sleeping for any length of time at night.
- He continues to have colic or is frequently inconsolable.
- He does not try to attract your attention through actions or sounds.