Lumbar puncture may be performed in febrile seizures primarily in which age group?

Lumbar puncture may be performed in febrile seizures primarily in which age group?

• A. Younger than 12 months.
• B. Older than 24 months.
• C. 12-24 months.
• D. Not indicated in any age.

Answer: (A)

When evaluating febrile seizures, the main concern is ruling out meningitis, especially in very young infants. In children younger than 12 months, meningitis can present with fever and seizures but with few or non-specific signs, and the risk of bacterial meningitis is higher. Because missing meningitis in this age group would have serious consequences, performing a lumbar puncture to examine the CSF is commonly considered. In older infants and children (12 months and up) who are well-appearing and up to date with vaccinations, meningitis is less likely, so a lumbar puncture is not routinely needed unless there are other concerning signs. Therefore, lumbar puncture is most appropriately considered in those younger than 12 months.

When evaluating febrile seizures, the main concern is ruling out meningitis, especially in very young infants. In children younger than 12 months, meningitis can present with fever and seizures but with few or non-specific signs, and the risk of bacterial meningitis is higher. Because missing meningitis in this age group would have serious consequences, performing a lumbar puncture to examine the CSF is commonly considered. In older infants and children (12 months and up) who are well-appearing and up to date with vaccinations, meningitis is less likely, so a lumbar puncture is not routinely needed unless there are other concerning signs. Therefore, lumbar puncture is most appropriately considered in those younger than 12 months.