Orphanet_2388 (Choreoacanthocytosis) can be described as follows. Chorea-acanthocytosis (ChAc) is a form of neuroacanthocytosis (see this term) and is characterized clinically by a Huntington disease-like phenotype with progressive neurological symptoms including movement disorders, psychiatric manifestations and cognitive disturbances. Also known as: ChAc, Chorea-acanthocytosis, Levine-Critchley syndrome.