Encephalitis is defined as a condition of irritation and swelling
(inflammation) of the brain, as a result of virus, bacteria and others
invasion.
Complications
1. Brain damage
Encephalitis can cause brain damage as a result of replication of
viruses after entering brain of that depleting the energy and oxygen in
the brain cell. In case of autoimmune encephalitis the immune
system makes antibodies that cause damage to neurons or other
brain cells as a result of the accumulateion of fluid,
white blood cells, the contents of dead nerve cells and disabled
viruses(28). Some resaerchers suggested that Glutamate is the major
excitatory CNS neurotransmitter. Glutamate
receptor autoantibodies have now been called to our attention, as they
are found in many patients with epilepsy, systemic lupus erythematosus
(SLE) and encephalitis, and can unquestionably cause brain damage(29).
Other found that The blood-brain barrier (BBB) serves to protect the central nervous system (CNS) from damage by exogenous molecules. Japanese encephalitis
(JE), caused by a neurotropic flavivirus, leads to inflammation in the
CNS, neuronal death and also compromises the structural and functional
integrity of the BBB(30).
2. Stroke
Stroke are associated with the complication of Encephalitis. In the study to investigate Herpes simplex virus type-1 encephalitis and occipital ischemic stroke, the team at Erasmus MC Sophia Children's Hospital said "Childhood ischemic stroke is a rare complication of herpes simplex virus type-1 encephalitis" in a description of healthy 3-year-old girl who presented with bilateral occipital ischemic stroke, attributable to herpes simplex virus type-1 encephalitis, highlighting the importance of viral diagnostics in cerebrospinal fluid"(31).
3. Seizures
Scientists at the National Center of Neurology and Psychiatry have found that Acute encephalitis with refractory, repetitive partial seizures (AERRPS) represents a peculiar form of encephalitis
mainly affecting children. They usually present abruptly with seizure
or impaired consciousness as well as high-grade fever following
antecedent infection(32)
4. Death
Compared to other infectious diseases, encephalitis has a high mortality rate. Overall,
approximately 10% of those with encephalitis die from the brain inflammation or
complications such as secondary infection. Some forms of encephalitis have more
severe courses, including herpes simplex virus encephalitis, in which mortality
is up to 30% with treatment, and 70-80% without(33).
5. Etc.
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Sources
(30) http://www.ncbi.nlm.nih.gov/pubmed/19628016
(31) http://www.ncbi.nlm.nih.gov/pubmed/19748051
(32) http://www.ncbi.nlm.nih.gov/pubmed/19327924
(33) http://www.encephalitis.info/Info/TheIllness/Mortality.html
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