Chart — Neurology
Bell’s Palsy vs Trigeminal Neuralgia Chart
Two facial cranial nerve disorders: Bell’s is a CN VII motor problem (paralysis → protect the eye, give steroids), and trigeminal neuralgia is a CN V sensory problem (stabbing pain → carbamazepine).
Educational use only. Diagnosis and drug therapy are provider-directed and individualized. This chart is an educational comparison aid. This material supports nursing education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional policy, or medical direction. Always follow facility protocols and current provider orders.
Side by Side
| Feature | Bell’s palsy | Trigeminal neuralgia |
|---|---|---|
| Cranial nerve | CN VII (facial) — MOTOR | CN V (trigeminal) — SENSORY |
| Hallmark | Sudden unilateral facial PARALYSIS (incl. forehead) | Brief, lancinating, electric-shock facial PAIN |
| Key clue | Forehead involved (vs stroke spares forehead); can't close the eye | Triggered by chewing, talking, touch, cold air; pain-free between attacks |
| Drug of choice | Corticosteroids early (± antivirals) | Carbamazepine (anticonvulsant) |
| Priority nursing concern | EYE PROTECTION (artificial tears, night lubrication/patch) | Pain & trigger control (lukewarm soft diet, gentle care) |
| Prognosis | Most recover in weeks–months | Chronic, recurrent; managed medically/surgically |
Exam Traps
- ✦Bell's palsy = CN VII motor (paralysis incl. forehead); priority = eye protection; treat with steroids early.
- ✦Forehead involved = Bell's (peripheral); forehead spared = stroke (central) — screen for stroke first.
- ✦Trigeminal neuralgia = CN V sensory (stabbing facial pain triggered by touch/chewing/cold).
- ✦Carbamazepine is the drug of choice for trigeminal neuralgia — monitor CBC, LFTs, and sodium.
- ✦Help trigeminal patients avoid triggers: lukewarm soft foods, chew on the unaffected side, avoid facial drafts.
Related Resources
Standards & sources
Fact-checked Jun 21, 2026This page is written to align with American Heart Association / American Stroke Association (AHA/ASA) · American Association of Neuroscience Nurses (AANN). It is an educational summary, not a citation of any single document — always verify specific doses, values, and protocols against current guidelines and your facility policy. How we source content →