Goldenhar syndrome is a birth defect that causes abnormal growth of tissue and bones in the face and skull. Symptoms usually affect one side of the face, although they can affect both sides. A common symptom is one ear that is underdeveloped or missing. Other symptoms range in type and severity and may include:cleft lip, cleft palatebenign growths around and/or on the eyes (epibulbar dermoids)an underdeveloped or missing eyedeformed upper and/or lower jawfused bones in the neck
Although the exact cause is unknown, environmental factors, genetics, or a combination of both of these influences may increase the risk of a fetus developing Goldenhar syndrome.