<unk> " refers to the<unk> l arches, also known as the pharyngeal arches, of the affected individual. The<unk> l arches are structures in the developing embryo that give rise to certain tissues in the neck and facial area. In individuals affected by this condition, the<unk> l arches fail to develop properly. This leads to some of the physical conditions of this<unk> , which include abnormal patches of skin on the neck and face region and can be abnormally hairy, thin or red and with a high number of blood vessels.<unk> " refers to the eyes. Individuals have vision impairment due to several malformations in the eyes such as small eyeballs, blockage in the tear ducts or lacking eyes completely. "Facial" refers to the face; those affected can have several abnormalities in that region. These abnormalities include a cleft lip, a cleft palate which is an opening in the roof of the mouth, widely spaced eyes (hypertelorism), sharp corners of the mouth that point upward, a broad nose that can include a flattened tip, along with several deformations of both the external and middle ear structures. This<unk>  is restricted to the face, but it can also cause underdeveloped or malformed kidneys.
Branchio-oculo-facial syndrome
Otofacial syndrome
Malpuech facial clefting syndrome
Urofacial syndrome
Laryngo-onycho-cutaneous syndrome
Long face syndrome
Skoptic syndrome
Tolosa–Hunt syndrome