First sign of hydrocephalus in children is:
In infants the diagnosis of hydrocephalus is confirmed by USG (as the fontanel are open) and in most cases it tells about the level of obstruction & cause (like dandy walker & arachnoid cyst.) Investigation of Choice for Hydrocephalus Infant's older patients low pressure(Hydrocephalus Elderly) Ultrasonography CT / MRI MRI
Post clinoid erosion
Large head
Sutural diastasis
Thinned out vault