||Symptoms of Minamata disease include numbness in the limbs, difficulty in moving the hands and legs, a narrowed visual field, language disorders, difficulty in hearing, disorders of the sense of equilibrium, hand and leg tremors, and movement disorders of the eyeballs, etc. In severe cases, people could become mad or unconscious, leading to death. Even in mild cases, symptoms such as headache, fatigue, and difficulty in tasting and smelling, etc. occur, bringing about obstacles in daily life.
With regard to treatment of Minamata disease, a method of discharging methylmercury from the body with a drug, etc. can be used at the early stages; however, current treatment only includes temporary pain killers, rehabilitation, and spa therapy, etc., and an ultimate treatment has not been discovered yet.