Familial cerebral palsy associated with normal intelligence.

We describe two families affected by a recessively transmitted familial cerebral palsy with onset in infancy. Two sisters in the first family have a severe spastic diplegia. The older sister also has mild mental retardation and hypothyroidism whilst the younger sister is of normal intelligence. Two brothers in the second family have a spastic quadriparesis, fifth finger camptodactyly and normal intelligence.