<unk>  is a congenital disorder that affects growth, cranial development, hair growth and dental development.
There are fewer than 200 people with the syndrome worldwide.[citation needed] An organization supporting people with the<unk>  is the Germany-based "Schattenkinder e.V."
Hallermann–Streiff syndrome
Cruveilhier-Baumgarten syndrome
Jervell and Lange-Nielsen syndrome
Werdnig-Hoffman disease
Laron syndrome
Prader-Willi syndrome
Fox-Fordyce disease
Turcot syndrome