Background Acute hemorrhagic encephalomyelitis (AHEM) is considered a rare form of Acute disseminated encephalomyelitis (ADEM), due to acute cerebral vasculitis. The symptomatology consists in similar neurological findings, (meningismus, headache, seizures, multifocal neurologic signs, asymmetrical neurological deficits and coma) with rapid onset of encephalopathy and biphasic evolution. Although previous respiratory disease was registered days before this condition, establishing etiology is quite a challenge, viruses being incriminated.
