Cleft lip and cleft palate are facial and oral malformations that occur very early in pregnancy, while the baby is developing inside the mother. Clefting results when there is not enough tissue in the mouth or lip area, and the tissue that is available does not join together properly.
What Causes a Cleft Lip and Cleft Palate?
In most cases, the cause of cleft lip and cleft palate is unknown. These conditions cannot be prevented. Most scientists believe clefts are due to a combination of genetic and environmental factors. There appears to be a greater chance of clefting in a newborn if a sibling, parent, or relative has had the problem.
Another potential cause may be related to a medication a mother may have taken during her pregnancy. Some drugs may cause cleft lip and cleft palate. Among them: anti-seizure/anticonvulsant drugs, acne drugs containing Accutane, and methotrexate, a drug commonly used for treating cancer, arthritis, and psoriasis.
Cleft lip and cleft palate may also occur as a result of exposure to viruses or chemicals while the fetus is developing in the womb.
In other situations, cleft lip and cleft palate may be part of another medical condition.
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