These broad folk categories of disorder bore considerable similarity to some psychiatric and neurologic categories within medicine. These includes psychosis, mania, neurosis, organic brain syndrome, mental retardation, cerebral palsy, epilepsy, and childhood autism. Lao folk terms for mental disorder also closely resembled those of other southeast Asian cultures, although illiterate tribal peoples appeared to have fewer terms than literate peasant peoples. Folk terms from more distant regions had broad similarity to those of southeast Asia, but lacked the specificity found within the region.