Evaluate pull to sit with attention to head lag, until achieved
If a child has head lag at 4 months, carefully evaluate other age-appropriate motor milestones (e.g., rolling) and refer to early intervention for developmental stimulation. Re-evaluate in one month.
If child is not age-appropriate: CK and referral
What does weakness in pull to sit look like?
Pull to sit with no head lag*: 50% by 3.5 months, 75% by 4 months, 90% by 6.5 months
*Source: Denver II