An environmental agent such as a drug, chemical, virus, or other factor that produces a birth defect is called a Teratogen.
Teratogen- A teratogen is something that, when exposed to a growing embryo or fetus, can result in birth defects or other abnormalities. Teratogens include some pharmaceuticals, illicit substances, cigarettes, chemicals, alcohol, certain illnesses, recreational drugs, and in rare situations, medical conditions including uncontrolled diabetes in pregnant women.
Birth Defect- A birth defect is a physical, physiological, or chemical characteristic of your newborn baby's body that is not normal. The problem may be brought on by genetics, an illness, exposure to radiation or drugs, or it may not be known what caused it.
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