It is estimated that there are, on average, 2 to 20 cases of<unk>  per million births. Although its rarity often leads to late diagnosis, infants with this disorder can be identified at birth by a "mask-like" lack of expression that is detectable during crying or laughing and by an inability to suck while nursing because of paresis (palsy) of the sixth and seventh cranial nerves. Also, because a person with<unk>  cannot follow objects by moving their eyes from side to side, they turn their head instead.
Möbius syndrome
Otocephaly
Morquio syndrome
Poland syndrome
Eiken syndrome
Hashimoto's encephalopathy
Creutzfeldt–Jakob disease
Wilson's temperature syndrome