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Medical Definition of Chorea-acanthocytosis
1. A slowly progressive familial chorea with associated mental deterioration, diminished deep tendon reflexes, bilateral atrophy of the putamen and caudate nuclei and acanthocytosis (thorny appearance of blood erythrocytes); the disorder typically begins around late adolescence; inheritance is usually autosomal recessive. Synonym: acanthocytosis with chorea. (05 Mar 2000)