Define anomaly12/30/2023 ![]() To see microcephaly during pregnancy, the ultrasound test should be done late in the 2nd trimester or early in the third trimester. During Pregnancyĭuring pregnancy, microcephaly can sometimes be diagnosed with an ultrasound test (which creates pictures of the body). Microcephaly can be diagnosed during pregnancy or after the baby is born. If you are pregnant or thinking about becoming pregnant, talk with your doctor about ways to increase your chances of having a healthy baby.įor information about the effects of Zika virus infection during pregnancy, visit CDC’s Zika and Pregnancy web page. CDC scientists announced that enough evidence has accumulated to conclude that Zika virus infection during pregnancy is a cause of microcephaly and other severe fetal brain defects.ĬDC continues to study birth defects, such as microcephaly, and how to prevent them. Some babies with microcephaly have been reported among mothers who were infected with Zika virus while pregnant. Interruption of the blood supply to the baby’s brain during development.Exposure to harmful substances, such as alcohol, certain drugs, or toxic chemicals.Severe malnutrition, meaning a lack of nutrients or not getting enough food.Certain infections during pregnancy, such as rubella, toxoplasmosis, or cytomegalovirus.Other causes of microcephaly, including severe microcephaly, can include the following exposures during pregnancy: Some babies have microcephaly because of changes in their genes. The causes of microcephaly in most babies are unknown. ![]() Researchers estimate that about 1 in every 800-5,000 babies is born with microcephaly in the United States. How Many Babies are Born with Microcephaly? Severe microcephaly also can be life-threatening. Because it is difficult to predict at birth what problems a baby will have from microcephaly, babies with microcephaly often need close follow-up through regular check-ups with a healthcare provider to monitor their growth and development. Because the baby’s brain is small and underdeveloped, babies with severe microcephaly can have more of these problems, or have more difficulty with them, than babies with milder microcephaly. These problems can range from mild to severe and are often lifelong. Feeding problems, such as difficulty swallowing.Intellectual disability (decreased ability to learn and function in daily life).Developmental delay, such as problems with speech or other developmental milestones (like sitting, standing, and walking).Microcephaly has been linked with the following problems: Other Problemsīabies with microcephaly can have a range of other problems, depending on how severe their microcephaly is. 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. Severe microcephaly is a more serious, extreme form of this condition where a baby’s head is much smaller than expected. Microcephaly can be an isolated condition, meaning that it can occur with no other major birth defects, or it can occur in combination with other major birth defects. 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. During pregnancy, a baby’s head grows because the baby’s brain grows. Microcephaly is a condition where a baby’s head is much smaller than expected.
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