Yazan Nadi answered Microbrachycephaly is characterised by a small head that is also unusually short and wide in proportion to its size and flatness in the back of head.It is associated with congenital syndromes such as :1-Down syndrome 2-Angelman syndrome 3-Roberts Syndrome 4-Cordial de Lange syndrome (Cdls1,Cdls2,Cdls3)5-Sutherland -Haan syndrome 6-Duplicate(2q)7-deletion 1p368-Microbrachycephaly -- ptosis -- cleft lip: A very rare syndrome characterised mainly by a small, short head, droopy eyelids and a cleft lip.
Anonymous answered Average head circumference remains less than the second percentile throughout the life