The head circumference of my daughter is lower than WHO standard at 6.5 months age with 40cm at present. Is this a matter of concern? What measures can be taken if needed to take corrective action?

A. It’s an average it could be more or less than that depending upon what were the birth statistics of the child it isn’t an international standard so please don’t worry not necessarily what you see and check on WHO the road should be just like that it could be pleasant minus and with what you mentioned seems completely alright