+A **birth defect**, also known as a congenital anomaly, is a structural or functional variation present at birth. These conditions arise during [Development](/wiki/development), often influenced by [Genetics](/wiki/genetics) or environmental factors, affecting a child's health or function.
+## See also
+- [Congenital](/wiki/congenital)
+- [Syndrome](/wiki/syndrome)
+- [Teratogen](/wiki/teratogen)
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