The baby is not growing inside the uterus at the normal rate. These babies usually have a low weight at birth. Just like there are different sizes of infants, children and adults, there are also different sizes of babies in the uterus.
Small babies tend to run in families.
The parents or other children in the family may have been small when they were born, too. Causes IUGR has various causes. During pregnancy, the doctor will do tests to find out if the baby is growing normally. When the ultrasound exam is done, your doctor will measure the size of your baby's head, abdomen and legs. These measurements will tell you and your doctor if your baby is growing normally.