Christmas disease Hartnup disease Werdnig-Hoffmann disease achromatic vision albinism amentia arrested development backwardness blithering idiocy color blindness cretinism cystic fibrosis dichromatic vision dysautonomia half-wittedness hemophilia ichthyosis idiocy idiotism imbecility infantilism insanity mental defectiveness mental deficiency mental handicap mental retardation mongolianism mongoloid idiocy moronism moronity mucoviscidosis muscular dystrophy pancreatic fibrosis profound idiocy retardation retardment sickle-cell anemia simple-wittedness simplemindedness simpleness simplicity subnormality thalassemia