Most common type of meningitis that affects children less than 5 years is:

AIIMS BHOPAL NO- 2018( Shift-2nd)

Child Health Nursing (Pediatrics)

Easy

Appeared in: AIIMS BHOPAL NO- 2018( Shift-2nd)

Explanation

Aseptic meningitis, which is predominantly caused by viruses, is the most common form of meningitis overall, especially in children under 5 years old.
Enteroviruses are the leading cause of aseptic meningitis, accounting for the majority of cases where a specific virus is identified (SRC_15111).
The term 'aseptic' signifies that cerebrospinal fluid (CSF) cultures are negative for bacteria, pointing towards a non-bacterial cause like a virus.
Unlike bacterial meningitis, the course of aseptic meningitis is typically self-limiting and less severe.

Option A: Idiopathic meningitis is not a specific type of meningitis based on a causative agent. It's a diagnosis of exclusion when the cause remains unknown after testing.
Option C: The incidence of bacterial meningitis in children under 5 has dramatically decreased due to routine childhood vaccinations against key pathogens like Haemophilus influenzae type b (Hib) and Streptococcus pneumoniae (SRC_15109).
Option D: Tuberculous meningitis is a very severe form of meningitis but is significantly less common in overall incidence compared to viral (aseptic) meningitis (SRC_15110).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Epidemiology and types of meningitis in the pediatric population as background academic context rather than a clinical decision trigger.
The primary clinical challenge is rapidly distinguishing between life-threatening bacterial meningitis and the more common, less severe viral meningitis. A lumbar puncture and CSF analysis are critical for diagnosis.
Nurses play a key role in monitoring for signs of increased intracranial pressure (e.g., bulging fontanelle, altered consciousness, bradycardia), which can occur in any type of meningitis but is a major cause of mortality in bacterial meningitis.
What if? If a child with suspected meningitis presents with a petechial or purpuric rash, the suspicion for meningococcal (bacterial) meningitis becomes extremely high. This is a medical emergency, and treatment with antibiotics should be initiated immediately, even before CSF results are confirmed.

How to Approach the Question

First, identify the key elements of the question: 'most common type', 'meningitis', and the specific population 'children less than 5 years'.
Recall the common causes of meningitis: viral, bacterial, fungal, and parasitic. The options provided are Aseptic (usually viral), Bacterial, and Tuberculous.
Consider the impact of modern medicine, specifically vaccination programs. The introduction of vaccines for Hib, pneumococcus, and meningococcus has drastically reduced the incidence of bacterial meningitis in children.
Based on this, viral meningitis (termed aseptic meningitis) has become the most frequent type in vaccinated populations.
Evaluate the options: Aseptic meningitis aligns with this knowledge. Bacterial meningitis is now less common. Tuberculous meningitis is severe but rarer. Idiopathic isn't a specific type.
Therefore, select Aseptic meningitis as the most common type in this age group.

Concept Tested & Keywords

Concept Tested: Epidemiology and types of meningitis in the pediatric population.
Stem keywords: meningitis, children less than 5 years, most common type
Lead-in keywords: Most common
Clinical cues: Age group: children less than 5 years, which is a key factor in the epidemiology of infectious diseases.
Negative lead-in flag: false

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E6 Medicine Harrison 22e Part 1 pp. 1166-1168, 1160-1162

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 586-588