How to rule out meningitis.

Written by Zhang Hui
Neurology
Updated on September 01, 2024
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Patients with meningitis usually show clinical symptoms such as fever, headache, nausea, and vomiting. To rule out meningitis, the following points should be considered. The first point is to check if the patient has a relevant medical history. If the patient's symptoms are very normal, without fever or headache, the possibility of meningitis is generally not very high. The second point is to pay attention to the physical examination, to see if there is any sign of meningeal irritation. If there is no meningeal irritation, it also does not support the presence of meningitis. The third point involves performing a lumbar puncture to examine the cerebrospinal fluid, checking if the pressure of the cerebrospinal fluid is high, and whether the cellular and biochemical properties within the fluid are normal. If completely normal, the likelihood of meningitis is also very small. Additionally, if necessary, an enhanced MRI scan of the brain should be performed, as meningitis usually shows enhancement.

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Written by Han Shun Li
Pulmonology
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What is meningitis?

Meningitis is predominantly an inflammation that occurs in the meninges and can extend to the brain parenchyma. It is generally caused by pathogenic microorganisms, including common pathogens such as bacteria, fungi, viruses, tuberculosis bacteria, etc. The most common symptoms include fever, headache, nausea, vomiting, stiff neck, etc. More severe cases can present with convulsions, disturbances of consciousness, or even coma. The condition can be mild or severe, and if not treated promptly, it can be fatal in serious cases.

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Written by Xie Wen
Neurology
1min 8sec home-news-image

Is vomiting frequent in meningitis?

Is vomiting frequent in meningitis? There are generally two situations for frequent vomiting in meningitis. The first situation occurs when pathogens infect the meninges or brain tissue, leading to an inflammatory response in the brain tissue, which then causes brain edema and subsequently leads to increased intracranial pressure. When intracranial pressure increases, it can cause vomiting, and this type of vomiting becomes projectile. Therefore, when vomiting is frequent and projectile, accompanied by severe headaches, fever, or even changes in condition, it is necessary to be vigilant about the increase in intracranial pressure leading to the formation of brain herniation, a situation that must be urgently addressed. The second reason is that after the pathogen enters the blood, it invades the gastrointestinal tract. An infection of the gastrointestinal tract itself can also cause frequent vomiting, accompanied by diarrhea, or even gastrointestinal bleeding, etc.

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Written by Li Jian Wu
Pulmonology
40sec home-news-image

How to test for meningitis?

The main methods for meningitis examination are lumbar puncture and cerebrospinal fluid testing. Cerebrospinal fluid examination may show increased pressure, turbid appearance, and purulent changes, containing a large number of white blood cells and neutrophils. Routine blood tests may also show a white blood cell count significantly higher than normal, predominantly composed of immature neutrophils. Additionally, it is possible to check electrolytes and use auxiliary diagnostic tools such as X-rays, CT scans, and MRI to confirm the diagnosis, facilitating early detection and treatment.

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Written by Zhang Hui
Neurology
1min 1sec home-news-image

How to rule out meningitis.

Patients with meningitis usually show clinical symptoms such as fever, headache, nausea, and vomiting. To rule out meningitis, the following points should be considered. The first point is to check if the patient has a relevant medical history. If the patient's symptoms are very normal, without fever or headache, the possibility of meningitis is generally not very high. The second point is to pay attention to the physical examination, to see if there is any sign of meningeal irritation. If there is no meningeal irritation, it also does not support the presence of meningitis. The third point involves performing a lumbar puncture to examine the cerebrospinal fluid, checking if the pressure of the cerebrospinal fluid is high, and whether the cellular and biochemical properties within the fluid are normal. If completely normal, the likelihood of meningitis is also very small. Additionally, if necessary, an enhanced MRI scan of the brain should be performed, as meningitis usually shows enhancement.

doctor image
home-news-image
Written by Zhang Hui
Neurology
55sec home-news-image

Early symptoms of meningitis

Meningitis is primarily a clinical display caused by various factors leading to inflammatory lesions and inflammatory exudation in the meninges. It can be triggered by viral infections, as well as bacterial, tuberculous, or fungal infections. Different pathogens can lead to different symptoms. The initial symptoms of meningitis mainly include the following aspects: First, patients generally experience significant fever, which can range from mild to high and persistent, closely related to the specific pathogen involved. Second, patients will have obvious headaches, as the meninges are irritated, and pain is certain. Third, it usually leads to symptoms of increased intracranial pressure such as nausea and vomiting. Fourth, patients may also experience discomfort and pain in the neck, and upon examination, positive signs of meningeal irritation can be observed.