A birth defect is a defect that can be minor or severe as it may occur when a baby is developing in utero or the womb. A birth defect can be of two types, such as physical and mental development. Generally, it can be divided/classified into two types. One is a structural birth defect in which any disability linked with the body part shapes. The causes, as well as symptoms, are mentioned above; also, there are various precautions given above, which are also beneficial to some extent.