<unk>  is a rare disorder that is present at birth. A child with this condition will have a port-wine stain birthmark (usually on the face) and neurologic problems.
Sturge-Weber syndrome
Landau-Kleffner syndrome
Braun-Bayer syndrome
Turcot syndrome
Saethre-Chotzen syndrome
Cruveilhier-Baumgarten syndrome
Treacher Collins syndrome
Prader-Willi syndrome