1 Type III, also called Kugelberg-Welander disease or juvenile spinal muscular atrophy, begins to affect kids as early as 18 months of age or as late as adolescence. This is the mildest form of SMA in children.  Type IV is the adult form of the disorder.
Minamata disease, sometimes referred to as Chisso-Minamata disease, is a neurological syndrome caused by severe mercury poisoning. Symptoms include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision and damage to hearing and speech.
Nerve gas attack on Tokyo subway. At the height of the morning rush hour in Tokyo, Japan, five two-man terrorist teams from the Aum Shinrikyo religious cult, riding on separate subway trains, converge at the Kasumigaseki station and secretly release lethal sarin gas into the air.