<unk>  is often irreversible. If the source of the problem is treated by removing the<unk>  chemical from the system, further damage can be prevented, but prolonged exposure to<unk>  chemicals can quickly destroy the brain. Long-term studies have demonstrated residual cognitive impairment (primarily attention and information-processing impairment resulting in dysfunction in working memory) up to 10 years following cessation of exposure. Severe cases of<unk>  can be life-threatening.
Toxic encephalopathy
Glycine encephalopathy
Viral encephalitis
Wernicke encephalopathy
Ethylmalonic encephalopathy
Powassan encephalitis
Autoimmune encephalitis
Herpesviral encephalitis