Another measure of infant growth is head circumference, or the size of your baby’s head. It’s important because it can indicate how well their brain is growing. If your baby’s brain isn’t growing properly, they may have a condition known as microcephaly.
When should I be concerned about my baby’s head size?
If your baby’s head is measuring small or is not growing: Your baby’s doctor may be concerned about failure to thrive (when a child doesn’t take in enough calories or is unable to utilize them and doesn’t grow properly as a result).
What does a baby head circumference tell you?
A: A baby’s brain and head do 80 percent of their growing during the first two years. Measuring head circumference helps doctors track the brain’s growth as the skull bones fuse together. It’s normal for a baby’s head size to seem disproportionate to her height and weight.
What is abnormal head circumference?
Macrocephaly refers to an overly large head. It’s often a symptom of complications or conditions in the brain. There’s a standard used to define macrocephaly: The circumference of a person’s head is more than two standard deviations above average for their age. Or, their head is larger than the 98th percentile.
Does having a small head mean anything?
Microcephaly is a condition where the head (circumference) is smaller than normal. Microcephaly may be caused by genetic abnormalities or by drugs, alcohol, certain viruses, and toxins that are exposed to the fetus during pregnancy and damage the developing brain tissue.
What can causes a baby’s head to grow too fast?
It’s normal for a baby’s head to grow a lot during the first year. But with congenital hydrocephalus, the head may grow faster than the normal rate for a baby’s height and weight. The condition may cause the soft spot (fontanelle) on your baby’s head to feel firm or bulge out.
What is considered a big head?
What is considered a big head? Is a size 8 hat big? The average size male head is 22″ 1/2 and the average size woman head is 21″ 3/4. … In the hat world, head sizes over 23″ 3/8 would be considered a big head.
What is a normal size baby head?
The average newborn’s head measures 13 3/4 in (35 cm) Generally, a newborn’s head is about half the baby’s body length in cm plus 10 cm. So a baby that is 18 inches long would be 45.7 centimeters (18 x 2.54). His or her head would be about 32.9 cm or a little under 13 inches.
At 8 years, head circumference at birth was no longer associated with IQ, but head growth during infancy remained a significant predictor, with full-scale IQ increasing an average of 1.56 points for each 1-SD increase in growth.
Is it bad if my baby has a small head?
Severe microcephaly is a more serious, extreme form of this condition where a baby’s head is much smaller than expected. Severe microcephaly can result because a baby’s brain has not developed properly during pregnancy, or the brain started to develop correctly and then was damaged at some point during pregnancy.