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Acute necrotizing encephalopathy (ANE) or sometimes necrotizing encephalitis or infection-induced acute encephalopathy (IIAE) is a rare type of brain disease (encephalopathy) that occurs following a viral infection. [4] Most commonly, it develops secondary to infection with influenza A, influenza B, and the human herpes virus 6. ANE can be ...
The case-fatality rate of untreated encephalitis syndrome is 56–75%, [5] but early treatment of raised intracranial pressure reduces fatality rate. Of 27 children surviving encephalitis syndrome 24 completely recovered within 3 months, only two developed late onset refractory epilepsy and four continued to have hemiplegia after 8 months. [7]
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Viral encephalitis can occur either as a direct effect of an acute infection, or as one of the sequelae of a latent infection. The majority of viral cases of encephalitis have an unknown cause; however, the most common identifiable cause of viral encephalitis is from herpes simplex infection. [ 12 ]
Prevention is typically by avoiding the use of aspirin in children. [1] When aspirin was withdrawn for use in children in the US and UK in the 1980s, a decrease of more than 90% in rates of Reye syndrome was observed. [2] Early diagnosis of the syndrome improves outcomes. [1] Treatment is supportive; [1] mannitol may be used to help with the ...
The incidence of viral encephalitis is about 3.5 to 7.5 per 100,000 people, with the highest incidence among the young and the elderly. Viral encephalitis caused by some viruses, such as the measles virus and the mumps virus, has become less common due to widespread vaccination.
It is estimated to affect at least 1 in 500,000 individuals per year, [1] and some studies suggest an incidence rate of 5.9 cases per 100,000 live births. [2] About 90% of cases of herpes encephalitis are caused by herpes simplex virus-1 (HSV-1), the same virus that causes cold sores.
Autoimmune encephalitis (AIE) is a type of encephalitis, and one of the most common causes of noninfectious encephalitis. It can be triggered by tumors , infections , or it may be cryptogenic . The neurological manifestations can be either acute or subacute and usually develop within six weeks.