VHOSPITAL.CLINIC · Differential Diagnosis
Meningitis vs Migraine
Clinical comparison — shared symptoms, key differences, distinguishing diagnostic tests, treatment pathways, and when to seek urgent evaluation.
Condition Overview
Condition A
Meningitis
Meningitis is inflammation of the meninges (membranes surrounding the brain and spinal cord), caused by bacteria, viruses, or fungi. Bacterial meningitis is a medical emergency causing severe headache, neck stiffness, fever, and potentially fatal if untreated.
Condition B
Migraine
Migraine is a neurological disorder characterized by recurrent, severe headaches often accompanied by nausea, vomiting, and sensitivity to light and sound. Attacks can last 4–72 hours and significantly impair daily functioning.
Shared Symptoms — Why They're Confused
Both conditions present with 5 overlapping symptoms, making clinical differentiation essential.
Key Clinical Differences
Meningitis
- Severe headache
- Nausea and vomiting
- Photophobia
- Neck pain
Migraine
- Migraine: recurrent episodic headache without fever
- No neck stiffness (meningism)
- Visual aura may precede headache
- Responds to triptans and rest
Distinguishing Diagnostic Tests
| Test | Meningitis | Migraine |
|---|---|---|
| Lumbar puncture (CSF analysis) | Elevated white cells (neutrophils in bacterial, lymphocytes in viral), elevated protein, low glucose | Normal CSF — not indicated in typical migraine |
| Temperature + clinical exam | Fever >38°C + Kernig's/Brudzinski's sign + neck stiffness = meningism triad | Afebrile, no neck stiffness, no meningeal signs |
| Non-blanching rash | Petechial/purpuric rash in meningococcal meningitis — emergency | Absent — no rash in migraine |
Treatment Approaches
Meningitis
- •IV antibiotics immediately (ceftriaxone)
- •IV dexamethasone to reduce neurological sequelae
- •Isolate patient, notify public health
Migraine
- •Triptans + NSAIDs + antiemetics for acute attack
- •Preventive: propranolol, topiramate, CGRP antagonists
- •Trigger identification and avoidance
When Doctors Consider Each Diagnosis
🔵 Consider Meningitis when:
- →First/worst headache of life, fever, neck stiffness, photophobia, petechial rash
🟢 Consider Migraine when:
- →Recurrent throbbing headache, aura, nausea, normal between attacks, responds to triptans
Explore Each Condition in Detail
Related Clinical Pages
Medical References
Content on this page is informed by evidence-based clinical sources including:
- World Health Organization (WHO)Global health guidance and disease classification
- National Health Service (NHS)UK clinical guidelines and patient information
- National Institute for Health and Care Excellence (NICE)Evidence-based clinical practice guidelines
- Centers for Disease Control and Prevention (CDC)US public health data and clinical recommendations
- PubMed – NCBIPeer-reviewed biomedical literature and clinical studies
- Cochrane LibrarySystematic reviews and meta-analyses in evidence-based medicine
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