When should I worry about delays in gross motor development?
⚡ Short answer: Widely accepted 'red flags' in babies' motor development are: **Sitting:** - 6 months — can't hold head upright, can't sit with support - 9 months — can't sit unsupported
Anonymous
bir anne · Development
I know each baby develops differently but there should be a limit. At what point about sitting, crawling, walking should I seriously worry about delays?
Maiyko AI ADVISOR
The real reply from the in-app AI advisor
Widely accepted 'red flags' in babies' motor development are:
Sitting:
- 6 months — can't hold head upright, can't sit with support
- 9 months — can't sit unsupported
Crawling:
- 9 months — no signs of scooting, rolling, or popping around
- 12 months — not crawling or moving any other way
- *Note:* Some babies walk without crawling; this alone isn't a problem.
Walking:
- 12 months — not pulling to stand using furniture
- 16 months — not taking steps while holding on (cruising)
- 18 months — not walking independently
Other warning signs (age-independent):
- Loss of a previously gained skill (for example, crawling, then suddenly stopping and not moving)
- Noticeably using one side of body less than the other
- Excessive muscle looseness or excessive stiffness (baby crosses legs like scissors when held)
Consulting your pediatrician if any of these appear is good. Otherwise, each baby has their own rhythm — some walk at 14 months, some at 18 months.
⚕️ Health note: This answer is for general information only; it is not medical advice. Every baby is different — for decisions about your baby's health, consult your pediatrician.
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