Dear Editor,
Acute disseminated encephalomyelitis (ADEM) is an immune-mediated demyelinating disorder characterized by a widespread attack of inflammation in the brain and spinal cord that damages myelin[1].ADEM is life-threatening and among the most frequent demyelinating disorders in childhood[2].Its incidence in children has been reported as 0.07-0.51 in Europe[3,4]and 0.2-0.6 in North America[5]per 100,000 children.Apart from Japan,with a reported incidence of 0.4 per 100,000 children[6],data on its incidence are sparse in Asian countries.