What causes acute encephalitis?

Acute encephalitis, also known as acute meningitis, is a very serious brain disease. It refers to an infectious disease in the meninges. The condition is very serious and requires timely treatment in the hospital. Acute meningitis often occurs in infants and young children. Children often show symptoms of headache, persistent fever, etc. There are many causes of acute encephalitis, the most common of which are bacterial infection, viral infection, or fungus.

What causes acute encephalitis?

1. Bacterial infection

Acute meningitis is caused by some kind of bacterial infection. There are three types, namely Haemophilus influenzae type B, Neisseria meningitidis and Streptococcus pneumoniae. About 80% of cases of meningitis in the United States are acute. Usually a small number of healthy people have nasal or

These germs carried on the body surface do not harm the human body; they are spread through coughing or sneezing. Some studies suggest that people are most susceptible to infection when they have a cold because an inflamed nose makes it easier for bacteria to enter the brain.

2. Caused by disease

Acute meningitis is a non-purulent inflammation of the meninges caused by Mycobacterium tuberculosis, accounting for about 6% of systemic tuberculosis. After the Mycobacterium tuberculosis infection spreads through the blood, it implants under the pia mater to form tuberculous nodules. After the nodules rupture, a large number of tuberculosis bacteria enter the subarachnoid space. In recent years, the morbidity and mortality rates of acute meningitis have tended to increase. Early diagnosis and treatment can improve efficacy and reduce mortality.

3. Viral infection

Acute meningitis can be caused by several viruses, including several associated with diarrhea, one of which may be caused by a bite from a giant vole, for example.

4. Caused by fungi

Acute meningitis can also be caused by fungi. The most common one is Cryptococcus, which is found in pigeons. Healthy people are not susceptible to fungus-related meningitis, but this is not the case for those infected with HIV, the human immunodeficiency virus that causes AIDS.

Encephalitis refers to an inflammatory lesion caused by the invasion of brain parenchyma by pathogens. Depending on the scope of the cause, it can be divided into broad and narrow sense. In a narrow sense, it refers to the inflammatory changes caused by direct invasion of the brain parenchyma by pathogenic microorganisms. Usually a narrow concept is used. The vast majority of causes are viruses, but they can also be caused by infections such as bacteria, fungi, spirochetes, rickettsia, parasites, etc. Some may be allergic diseases, such as acute disseminated encephalomyelitis.