<unk>  is a disorder that affects development of the limbs, head, and face. The features of this syndrome are highly variable, ranging from very mild to severe. People with this condition typically have one or more extra fingers or toes (polydactyly) or an abnormally wide thumb or big toe (hallux).
Greig cephalopolysyndactyly syndrome
Laron syndrome
Cruveilhier-Baumgarten syndrome
Fox-Fordyce disease
Aagenaes syndrome
Jervell and Lange-Nielsen syndrome
Saethre-Chotzen syndrome
Singleton-Merten syndrome