Meningitis – Symptoms, Causes & Treatment
Meningitis is a serious inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It can be caused by bacteria, viruses, or fungi.
Wissenswertes über "Meningitis"
Meningitis is a serious inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It can be caused by bacteria, viruses, or fungi.
What is Meningitis?
Meningitis is an inflammation of the meninges – the three layers of protective tissue that surround the brain and spinal cord. It is one of the most serious conditions affecting the nervous system and can be life-threatening. Early diagnosis and prompt treatment are critical to improving outcomes.
Causes
Meningitis can be caused by a range of infectious agents:
- Bacteria: The most common bacterial causes include Neisseria meningitidis (meningococcus) and Streptococcus pneumoniae (pneumococcus). Bacterial meningitis is particularly dangerous and requires immediate medical attention.
- Viruses: Viral meningitis is the most common form and generally follows a milder course. Common causes include enteroviruses, herpesviruses, and the mumps virus.
- Fungi: Fungal meningitis (e.g., caused by Cryptococcus neoformans) occurs mainly in immunocompromised individuals.
- Other causes: Rarely, parasitic infections, autoimmune conditions, or certain medications can also cause meningitis.
Symptoms
The classic triad of meningitis symptoms includes:
- Severe headache
- High fever
- Neck stiffness (meningismus) – difficulty bending the neck forward due to inflammation
Additional common symptoms include:
- Nausea and vomiting
- Sensitivity to light (photophobia)
- Sensitivity to noise (phonophobia)
- Altered consciousness or confusion
- Skin rash (characteristic of meningococcal infection: a non-blanching red or purple rash)
In infants, symptoms may be atypical: bulging fontanelle, high-pitched crying, poor feeding, and fever.
Diagnosis
Diagnosing meningitis involves several steps:
- Physical examination: Checking for clinical signs such as neck stiffness (Brudzinski and Kernig signs).
- Lumbar puncture (spinal tap): The key diagnostic procedure – cerebrospinal fluid (CSF) is collected and analyzed for pathogens, inflammatory markers, and cell counts.
- Blood tests: Full blood count, inflammatory markers (CRP, PCT), and blood cultures.
- Imaging: CT or MRI scan of the head, especially before lumbar puncture, to rule out increased intracranial pressure.
Treatment
Treatment depends on the underlying cause of meningitis:
Bacterial Meningitis
Bacterial meningitis is a medical emergency. Treatment must begin immediately and includes:
- Intravenous antibiotics (e.g., penicillin, cephalosporins) – started as early as possible
- Corticosteroids (e.g., dexamethasone) to reduce inflammation and prevent long-term complications
- Intensive care monitoring and supportive treatment
Viral Meningitis
Most viral forms resolve without specific antiviral therapy. Treatment focuses on relieving symptoms (pain management, hydration, rest). Herpes-related meningitis is treated with aciclovir.
Fungal Meningitis
Antifungal medications such as amphotericin B and fluconazole are used, often over a prolonged course of treatment.
Complications
Untreated or severe meningitis can lead to lasting complications, including:
- Hearing loss
- Brain damage and cognitive impairment
- Epilepsy
- Paralysis
- Septicaemia (blood poisoning) in bacterial cases
- In severe cases: death
Prevention
Vaccines are available against several of the most common bacterial causes of meningitis:
- Meningococcal vaccine (against serogroups A, C, W, Y, and B)
- Pneumococcal vaccine
- Haemophilus influenzae type b (Hib) vaccine
These vaccines are included in national immunisation programmes in many countries and are also recommended for certain at-risk groups.
References
- World Health Organization (WHO): Meningitis. Geneva, current edition. Available at: www.who.int
- van de Beek D. et al. - Community-acquired bacterial meningitis in adults. New England Journal of Medicine, 2006; 354(1): 44-53.
- Tunkel A.R. et al. - Practice Guidelines for the Management of Bacterial Meningitis. Clinical Infectious Diseases, 2004; 39(9): 1267-1284.
Verwandte Produkte
For Healthy Oral Flora & Dental Care
Formulated lozenges with Dentalac®, probiotic lactic acid bacteria, and Lactoferrin CLN®
For your universal protection
As one of the most valuable proteins in the body, lactoferrin is a natural component of the immune system.
For your iron balance
Specially formulated for your iron balance with plant-based curry leaf iron, Lactoferrin CLN®, and natural Vitamin C from rose hips.
Best-selling products
For your universal protection
As one of the most valuable proteins in the body, lactoferrin is a natural component of the immune system.
For your iron balance
Specially formulated for your iron balance with plant-based curry leaf iron, Lactoferrin CLN®, and natural Vitamin C from rose hips.
For Healthy Oral Flora & Dental Care
Formulated lozenges with Dentalac®, probiotic lactic acid bacteria, and Lactoferrin CLN®The latest entries
3 Posts in this encyclopedia categoryInguinal Canal
Lung Ventilation Scintigraphy
Mesenteric Artery Stenosis
Most read entries
3 Posts in this encyclopedia categoryMagnesiumcarbonat
Cologne list
Calorie content
Related search terms: Meningitis + Brain membrane inflammation