Why does my baby have a small head?
During pregnancy, a baby’s head grows because the baby’s brain grows. Microcephaly can occur because a baby’s brain has not developed properly during pregnancy or has stopped growing after birth, which results in a smaller head size.
Is it bad if my baby has a small head?
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).
How many cases of microcephaly are there in Brazil?
The peak of the epidemic was in 2016, with 1,469 confirmed cases of microcephaly in Brazil , of which 61.1% (897) occurred in the Northeast Region. In 2017 the epidemic lost strength, with 181 confirmed cases of microcephaly , of which 45.9% (83) occurred in the Northeast.
When should I be concerned about my baby’s head size?
For a doctor to diagnose macrocephaly, the measurement of the head around its widest part needs to be larger than the 98th percentile. Macrocephaly may sometimes be a sign of an underlying condition that requires treatment. In other cases, it may occur due to genetics, including a family history of macrocephaly.
Does a small head always mean microcephaly?
Microcephaly is a birth defect in which a baby’s head is smaller than expected, compared to babies of the same sex and age. Babies with mild microcephaly often don’t have problems other than small head size.
What does small head size indicate?
Microcephaly is a medical condition in which the circumference of the head is smaller than normal because the brain has not developed properly or has stopped growing. Microcephaly can be present at birth or it may develop in the first few years of life.
At what age is microcephaly diagnosed?
Diagnosis . Early diagnosis of microcephaly can sometimes be made by fetal ultrasound. Ultrasounds have the best diagnosis possibility if they are made at the end of the second trimester, around 28 weeks, or in the third trimester of pregnancy. Often diagnosis is made at birth or at a later stage.
What is the life expectancy of microcephaly?
There is no standard life expectancy for microcephalic babies because outcomes depend on so many factors, and the severity of the condition can range from mild to severe. Babies with mild microcephaly may still meet the same milestones like speaking, sitting and walking as a child without the disorder.
Does baby head size determine intelligence?
Brainy Babies Those with the biggest heads tended to have the highest IQ scores. The researchers found that head growth by age 1 was the key factor.
How common is Zika in Brazil?
In 2017, it was estimated that over 120 million people in Brazil were at risk of Zika virus infections , compared to 32 million people in Mexico and 29.5 million in Columbia. Brazil was by far the country most affected by this epidemic, reporting the most cases of people infected with the Zika virus worldwide.
What are the chances of Zika causing microcephaly?
We estimated the prevalence of microcephaly of 2.3% (95% CI = 1.0–5.3%) among all pregnancies. Limitations include mixed samples of women infected at different pregnancy times, since it is known that infection at the first trimester is associated with higher risk to congenital anomalies.
Does Zika always cause microcephaly?
Babies can develop microcephaly after birth if their head growth slows or if the brain fails to develop. There have been no reports of Zika virus infection around the time of birth leading to microcephaly in infants.
Is baby head size important?
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.
What head circumference is microcephaly?
Microcephaly is defined as a head circumference 2 standard deviations (SDs) below the mean for age and sex or roughly less than the 2nd percentile. Conversely, macrocephaly is defined as a head circumference greater than 2 SDs above the mean or greater than the 98th percentile.
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.