Should I be concerned if my son's head growth jumped from ~ 10th percentile at 6 months to ~19th percentile at 8 months...? I don't want to run to the ped with him for no reason as they may tell me I'm overreacting so figured I'd ask here first...
He was born with a "normal" sized head, i.e. 13.75" at birth, it was then trending down, which the ped said was ok:
at 1 mo 25%,
at 2 mo 15%,
at 3 mo 12.5%,
at 4 mo 15 %,
at 5 mo dipped to 10%,
at 6 mo 9.5%
and now at 8 mo went up to 19 %...???
All of these were taken at the peds office but the last one which I took myself... should I be concerned if he's not trending on a particular % the whole time? Reason I'm concerned is I heard possible link to autism if there's an increased head growth between 6-18 mo.... am I being paranoid ahead of time?...
Everything I've read said that autism link is for "significant" head increase... but I don't know if significant means .. .is it above the normal ranges i.e. over the 100th % based on the WHO child growth standards? or can an increase within those ranges signal something? When do people (peds) generally indicate to worry about this stuff.. ? and by stuff I mean autism or anything else as a result of increased head growth... TIA