#AskTheExpert hello madam.is small head means always microcephaly.is microcephaly detected by blood tests.we meet doctor about his weight ,at the time of birth he get seizures and recovered after 2days we are not using any medicine from that time .but developmental delays occurred.is heredity is also a reason for small head why means my younger brother have Also a small head.he is also delayed in all his mile stones like sitting walking, standing and talking.but now he is very intelligent.now he is 13months old .he is sitting on his own.moving from one place to another place by sitting,he is standing with support of cot.but he not standing himself without support.and he weight is6.9 kg.iam getting more tension about him.please help me to increase his weight madam