Meningitis

The brain and spinal cord are surrounded by protective membranes. When these membranes become inflamed, the condition is called meningitis.

Meningitis can occur at any age, but infants and young children are at increased risk for certain types of the disease. Older children and adolescents can also develop meningitis.

There are also rarer causes of meningitis, including fungal infections and noninfectious inflammatory conditions.

Symptoms

Symptoms of meningitis may appear suddenly or develop gradually. In the early stages, they may resemble common childhood illnesses, such as the flu or another viral infection. Therefore, it is important to watch not only for fever or pain but also for changes in your child's behavior and overall condition.

Symptoms in infants and toddlers

In infants, especially during the first few months of life, symptoms are not always typical and can be difficult to recognize. Possible signs include:

• Fever, or sometimes a lower-than-normal body temperature.
• Unusual drowsiness, weakness, or difficulty waking up.
• Significant irritability or unusual crying, sometimes with a higher-pitched cry than normal.
• Decreased appetite or difficulty breastfeeding or eating.
• Vomiting.
• Unusually floppy or stiff body.
• Bulging fontanelle (the soft spot on the baby's head), even when the baby is calm and not crying.
• Toddlers who can express pain may also experience headaches or neck pain.

Symptoms in older children and adolescents

In older children and adolescents, symptoms may be more noticeable and include:

• Fever.
• Severe headache, sometimes worsening rapidly.
• Neck stiffness or significant pain when moving the neck.
• Nausea and vomiting.
• Sensitivity to light.
• Unusual drowsiness, confusion, or changes in behavior.
• Sometimes seizures.
• Not all symptoms appear together, and the absence of fever, rash, or neck stiffness does not rule out the disease.

Transmission

How meningitis spreads depends on the virus or bacteria that caused the disease.

Some bacteria that can cause meningitis spread from person to person through respiratory and throat secretions, such as during close contact or exposure to saliva. Some people carry these bacteria in their nose or throat without developing symptoms but can still transmit them to others.

Viruses that can cause meningitis can also spread between people in different ways, such as through contact with respiratory secretions, unwashed hands, or contaminated stool, depending on the type of virus.

It is important to know that not everyone infected with a virus or bacteria that can cause meningitis will develop the disease.

In case of exposure to someone with meningitis

In certain cases of bacterial meningitis, such as when the disease is caused by meningococcal bacteria, people who have been in close contact with the person who is sick may need preventive antibiotic treatment.

The need for treatment depends on the type of bacteria and the nature of the exposure. If a child has been exposed to someone with meningitis, it is important to follow the instructions provided by the medical team or Health Bureau.

Diagnosis

When meningitis is suspected, the doctor will assess the child's general condition, symptoms, and medical history. Based on the findings, additional tests may be needed to diagnose the disease and identify its cause.

Tests may include:

• Blood tests: To identify signs of infection and investigate the possible cause of the disease.
• Lumbar puncture (spinal tap): A procedure in which a small sample of the fluid surrounding the brain and spinal cord is collected. The sample helps determine whether meningitis is present and what is causing it.

Additional tests may sometimes be needed, depending on the child's medical condition.

Important to remember: It is not possible to reliably distinguish between viral and bacterial meningitis based on symptoms alone. Therefore, if meningitis is suspected, do not wait at home to see whether the condition improves.

Recovery and possible complications

Recovery time from meningitis depends on the cause of the disease, its severity, and the child's overall health.

In many cases of mild viral meningitis, recovery occurs within approximately 7 to 10 days, without significant complications. In more severe cases, recovery may take longer.

With bacterial meningitis, early treatment increases the chances of recovery, but complications can sometimes occur even after appropriate treatment.

Possible complications include:

• Hearing loss.
• Seizures.
• Developmental, learning, or concentration difficulties.
• Damage to the nervous system, which may affect movement or other functions.

Not every child with meningitis will develop complications. Many recover well, especially when the disease is diagnosed and treated promptly.

Medical follow-up after recovery

After bacterial meningitis, it is important to continue follow-up care as directed by the medical team. Follow-up care may include a hearing test, developmental assessment, or additional tests.

Even after returning to normal activities, it is important to watch for changes in hearing, behavior, learning, or development and seek medical advice if any concerns arise.

For information about the recommended vaccination schedule, see the routine immunization schedule.

Following these practices and getting vaccinated can reduce the risk of infections, but does not eliminate it completely.

Even if a child is vaccinated, it is important to seek immediate medical evaluation if meningitis is suspected.