Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/3/2025

Management of Intermittent Headaches in Aseptic Meningitis

Diagnostic Considerations

  • The American College of Physicians recommends that aseptic meningitis diagnosis should include CSF analysis, which typically shows normal glucose levels, as evidenced by studies published in the Journal of Infection 2
  • Laboratory investigations for aseptic meningitis should include blood cultures prior to antibiotics, as suggested by the Journal of Infection 3
  • PCR testing for pneumococcal and meningococcal disease is essential in diagnosing aseptic meningitis, according to the Journal of Infection 2
  • Glucose and lactate measurements, full blood count, urea, creatinine, electrolytes, and liver function tests are also crucial in the diagnosis of aseptic meningitis, as recommended by the Journal of Infection 4, 5

Treatment Algorithm for Intermittent Headaches

  • The American Academy of Neurology suggests that acetaminophen and NSAIDs can be used for headache relief in aseptic meningitis, with caution for NSAID-induced aseptic meningitis, as reported by Praxis Medical Insights 1
  • Ensure adequate hydration and rest for patients with aseptic meningitis, as recommended by Praxis Medical Insights 1
  • Monitor for neurological deterioration that might suggest encephalitis rather than meningitis, according to Praxis Medical Insights 1
  • For HSV-2 meningitis, the Infectious Diseases Society of America recommends aciclovir 10 mg/kg IV every 8 hours until resolution of fever and headache, followed by valaciclovir 1g three times daily to complete a 14-day course, as suggested by Praxis Medical Insights 1
  • For VZV meningitis, the Journal of Infection recommends intravenous aciclovir and considers a short course of corticosteroids, especially if there's a vasculitic component 6

Post-LP Headache Management

  • Post-LP headaches typically have a low-pressure phenotype and are usually self-limiting, resolving without specific treatment, as reported by the Journal of Infection 4
  • Persistent post-LP headache cases may require a blood patch, according to the Journal of Infection 4

Follow-Up Care

  • Many patients may feel well at discharge but cannot immediately return to normal activities, and should be monitored for common post-meningitis symptoms such as fatigue, sleep disorders, and emotional difficulties, as recommended by Praxis Medical Insights 1
  • Consider staged return to work or studies, starting part-time, and early referral to mental health services may be necessary for emotional difficulties, according to Praxis Medical Insights 1

Clinical Pitfalls to Avoid

  • Failing to distinguish between viral meningitis and encephalitis requires different management, as suggested by Praxis Medical Insights 1
  • Assuming all headaches in aseptic meningitis have the same etiology, when some may be post-LP headaches requiring different management, as reported by the Journal of Infection 4