Developmental Standards for a 4-Month-Old Infant
Disease description:
I am 28 years old this year, and my baby is four months old. Today, when I took the baby out, I noticed that he/she is much smaller compared to other babies of the same age. I would like to ask the doctor, what is the developmental standard for a four-month-old baby?
Doctor's answer (1)
Dr. Zhou Xiaofeng
Four-month-old babies will experience significant developmental progress. The following are some common developmental milestones:
1. Weight and height: The average weight for boys is about 6.9-8.5 kilograms, with an average height of approximately 61.4-66.7 centimeters; girls typically weigh around 6.2-7.7 kilograms and measure about 60.1-65.4 centimeters in height. However, each child's growth rate may vary slightly.
2. Motor skills: Babies may start attempting to roll over, possibly moving from a back-lying position to a side-lying position, although they may not yet be able to roll completely onto their stomachs. Their arms and legs become stronger, and they will begin trying to grasp toys.
If your baby shows significant delays in these areas, it is advisable to seek medical evaluation promptly.
