Frequency of Various signs and sumptoms of Minamata Disease

In 34 adult patients in Minamata bay area, Tokumi, 1968

1; Constriction of visual filed, 2; Superficial sensory disturbance, 3; Deep sensory disturbance, 4; Ataxia (adiadochokineses), 5; Ataxia in writing, 6; Ataxia in buttoning, 7; Ataxia in finger-finger, in finger-nose tests, 8; Ataxia (Romberg's sign), 9; Impairment of speech, 10; Impairment of hearing, 11; Impairment of gait, 12; Tremor, 13; Muscular rigidity, 14; Ballism, 15; Chorea, 16; Athetosis, 17; Contracture, 18; Exaggerated tendon reflex, 19; Weak tendon reflex, 20; Hemiplegia, 21; Salivation, 22; Sweating, 23; Slight mental disturbance