What causes meningitis and how is meningitis caused?

Meningitis as the name suggests is meningeal inflammation, the human brain actually has three layers of membranes, the innermost layer is called the leptomeninges, the middle layer is called the arachnoid membrane, and the outermost layer is called the dura mater, meningitis refers to the inflammation of the arachnoid membrane and the subarachnoid space caused by bacterial or viral infection, generally speaking, the more harmful is the inflammation caused by purulent bacteria.

There are many reasons for it, the first is the inflammation of some organs around the brain, including otitis media of the ear, sinusitis of the nose, some infections of the pharynx, and mastoiditis of the masttoid, inflammation destroys the skull, so that bacteria invade the skull and cause meningitis, the second is hematogenous spread, which refers to the bacterial infection in the distant organs outside the brain, and the bacteria enter the brain through the bloodstream infection, the third is the infection caused by the entry of exogenous bacteria caused by trauma to the brain, and a small part of the causes are related to surgery. A very small number of infections may occur after neurosurgery, called iatrogenic infections, and meningitis is mainly caused by these four causes.

Meningitis is caused by various pathogenic bacteria that infect the meninges. For example, viral meningitis is a viral infection that invades the meninges and causes corresponding clinical symptoms, and various pathogenic viruses can infect the meninges. Bacterial meningitis, or purulent meningitis, is a bacterial infection of the central nervous system, invading the meninges.

Fungal meningitis is a fungal infection of the meninges, the common being cryptococcal meningitis neoformans, and the condition is relatively critical. There is also tuberculous meningitis, which is infection of the meninges by Mycobacterium tuberculosis. In conclusion, meningitis is caused by infection with various pathogenic microorganisms.

Meningitis is generally divided into four types: bacterial meningitis, tuberculous meningitis, viral meningitis, and cryptococcal meningitis

1. Causes of bacterial meningitis. Bacterial meningitis is caused by a bacterial infection. This kind of bacteria is carried in the nose of healthy people or in the human body, usually it will not cause harm to the human body, but people are prone to infection with this kind of germ when they suffer from a cold, because the nose is inflamed and it is very likely to let this bacteria enter the skull, and it is easy to cause bacterial meningitis if it is not found and treated in time.

In addition, bacterial meningitis can be transmitted by coughing or sneezing.

2. Causes of tuberculous meningitis. Tuberculous meningitis is a non-purulent inflammation of the meninges caused by Mycobacterium tuberculosis, which accounts for about 6% of systemic tuberculosis. Mycobacterium tuberculosis infection is spread through the bloodstream and planted under the leptomeninges to form tuberculous nodules, and after the nodules rupture, a large number of tuberculosis bacteria enter the lower cavity of the arachnoid membrane.

In recent years, the morbidity and mortality of tuberculous meningitis have also increased.

3. Causes of viral meningitis. Viral meningitis can be caused by several viruses, including several viruses associated with diarrhea, one of which is likely to be contracted after being bitten by a large vole, etc.

4. Causes of cryptococcal meningitis. Cryptococcal meningitis can be caused by fungi, and cryptococcus is the most common and can be found in pigeons. Healthy people are less susceptible to fungal-related meningitis, but people with HIV infection, a virus that can cause immunodeficiency in people with AIDS.

As a result, people with AIDS are more likely to develop cryptococcal meningitis.

Meningitis is mostly caused by bacterial or viral infections in the blood, which leads to the displacement of bacterial, viral, fungal or tuberculosis infections in the blood to the meninges or brain parenchyma, causing inflammatory lesions of the meninges or brain parenchyma. Clause.

1. Bacterial meningitis is caused by a certain bacterial infection, which is divided into three types, namely Haemophilus influenzae, Neisseria meningitidis and Streptococcus pneumoniae infection. Clause.

2. Tuberculous meningitis is a non-purulent inflammation of the meninges caused by Mycobacterium tuberculosis, accounting for about 6% of systemic tuberculosis. Clause.

3. Viral meningitis, viral meningitis is mainly intestinal and respiratory viral infections, such as coxsackievirus, hand, foot and mouth disease EV71 virus and herpes simplex virus caused by meningitis. Clause.

4. Other types include cryptococcal meningitis, which can also be caused by cryptococcal infection, which can be found in pigeons, healthy people are not susceptible to fungal meningitis, but for HIV virus infections, it is easy to cause fungal infections due to immunodeficiency, and both viral and bacterial meningitis can be transmitted through direct contact with the patient's nasopharyngeal secretions.

Meningitis is a brain disease caused by the human body being infected with pathogenic microorganisms due to poor nutrition, low immunity or cold weather.

How meningitis is caused

Meningitis is a disease that occurs more often in childhood, if it is not carried out in time** and may cause more serious consequences, so it is necessary to pay more attention, so how is meningitis caused, let's look down together.

How meningitis is caused

Generally speaking, the occurrence of meningitis may be related to bacterial infection, if it is easy to be infected by this bacteria when you have a cold, because this bacteria usually exists in the nasal cavity of the human body or in the body, if the nose is inflamed, it will make this bacteria enter the brain, and if it is not carried out in time, it may cause bacterial meningitis.

Tuberculous meningitis is caused by the Mycobacterium tuberculosis bacilli in the body, so if this happens, he actually has a relatively high morbidity and mortality, in addition to tuberculous meningitis, there is also viral meningitis, then this wife may also be caused by some viruses, including some viruses may cause diarrhea, or some insect bites may cause meningitis.

The occurrence of meningitis will have certain sequelae, for example, if it is not carried out in time, it is likely to lead to hydrocephalus, or cause loss of language and expression ability, resulting in intracranial nerve damage and paralysis, and may cause epilepsy in the later stage of the Sakura segment, so it must be carried out in time**.

How is meningitis caused, in fact, the occurrence of meningitis will cause relatively large damage to the body, and he may also have more serious sequelae, so we must pay attention to the health care of the body and the prevention of these conditions in our lives.

Meningitis is an acute or subacute inflammatory disease caused by invasion of the leptomeninges by various pathogenic microorganisms. This has already been said, it is estimated that you are asking about the route of infection, according to different pathogens, it can be transmitted through the respiratory tract, digestive tract, insect vectors, and its own hematogenous spread, of course, head injury can also be caused. In addition, everyone likes to say that fever causes meningitis, but it is actually wrong, fever is a symptom of the disease and does not cause meningitis.

It's like saying that it hurts when you fall, whether you have a fracture or not has a fracture or not, it hurts to death or not, or it hurts a little bit.

It's usually a fright, or that trauma, take medicine! It will cause meningitis, and the fever ** will also be prone to meningitis if it is not timely.

Meningitis is a very common inflammation of the brain, and the prevalence of this disease is mainly in infants and adolescents. It is understood that meningitis is very harmful to patients, and if the human body is infected and sick, the disease will develop rapidly. Understanding the causes of meningitis is necessary to effectively prevent it?

So, what are the main causes of this disease?

Meningitis is an epidemic disease in which the meninges of the human body are inflamed by viral or bacterial infection. Various biological pathogens, including viruses, bacteria, fungi, parasites, spirochetes, rickettsia, etc., can invade the brain or spinal cord parenchyma, meninges, and blood vessels, causing acute and chronic inflammation. Most people with meningitis can do so within a few weeks.

The onset of meningitis is related to the physical condition of the individual. If you usually do not pay attention to your physical health, often stay up late online, have abnormal work and rest times, and eat irregularly, once you are overworked, your body's resistance will decrease, increasing the probability of pathogen infection. Therefore, as long as we exercise regularly, enhance our immunity, and have a normal work and rest, and diet, then the chance of suffering from encephalitis will be greatly reduced.

When the body is fatigued, there can be low immunity and other conditions, leading to the reproduction of pathogenic bacteria, which can be found to be elevated white blood cells through the examination of blood routine, and elevated white blood cells often mean that the patient's symptoms are caused by bacterial infection that leads to acute or chronic infection, inflammation, tissue damage, etc. ) is a type of phagocytic cell that can be seen as an important line of defense for the body's defense system, and when infection occurs, neutrophils and eosinophils, which are the most abundant in white blood cells, appear rapidly.

Invasive meningococcal disease is an important cause of bacterial meningitis, which occurs more often in adolescents and infants, about 1 in 20 patients will die, and about 1 in 6 patients will have sequelae such as neurological and behavioral disorders. If the mother smoked during pregnancy, the risk of invasive meningococcal disease is higher, more than three times more than normal.

Children under 5 years of age who are regularly exposed to "secondhand smoke" have more than twice the normal risk of invasive meningococcal disease. If the mother smoked during pregnancy, the risk of invasive meningococcal disease is higher, more than three times more than normal.

The above is a detailed introduction to the main ** that causes meningitis, and I hope these contents can help you to a certain extent. I hope that everyone can pay attention to this knowledge and take preventive measures to reduce the chance of meningitis. Finally, I wish you all good health.

Meningitis as the name suggests is meningeal inflammation, the human brain actually has three layers of membranes, the innermost layer is called the leptomeninges, the middle layer is called the arachnoid membrane, and the outermost layer is called the dura mater, meningitis refers to the inflammation of the arachnoid membrane and the subarachnoid space caused by bacterial or viral infection, generally speaking, the more harmful is the inflammation caused by purulent bacteria.

There are many reasons for it, the first is the inflammation of some organs around the brain, including otitis media of the ear, sinusitis of the nose, some infections of the pharynx, and mastoiditis of the masttoid, inflammation destroys the skull, so that bacteria invade the skull and cause meningitis, the second is hematogenous spread, which refers to the bacterial infection in the distant organs outside the brain, and the bacteria enter the brain through the bloodstream infection, the third is the infection caused by the entry of exogenous bacteria caused by trauma to the brain, and a small part of the causes are related to surgery. A very small number of infections may occur after neurosurgery, called iatrogenic infections, and meningitis is mainly caused by these four causes.

The occurrence of meningitis is mainly related to infectious factors. There are many types of meningitis, such as bacterial meningitis, viral meningitis, tuberculous meningitis, or purulent meningitis. Different pathogens can cause different types of meningitis, such as bacterial, viral, or parasitic infections.

The lesion of infection can be the infection of the head or the infection of the facial features, for example, the appearance of infection in the risk triangle of the face will lead to bacteremia or sepsis, etc., and the bacteria enter the meninges with the blood, causing inflammation and meningitis. Meningitis can also be caused by other systemic diseases, such as meningitis after viral or bacterial infection.

Meningitis is caused by infection of the meninges by various pathogenic microorganisms. For example, viral meningitis is a virus that invades the meninges and causes corresponding clinical symptoms, and various pathogenic viruses can infect the meninges. Bacterial meningitis or purulent meningitis is caused by bacterial invasion of the central nervous system and invasion of the meninges.

Fungal meningitis is caused by fungal infection of the meninges, the most common being cryptococcal meningitis neoformans, which is critically ill. Tuberculous meningitis, on the other hand, refers to infection of the meninges by tuberculosis bacteria. In summary, meningitis is caused by a variety of pathogenic bacterial infections.