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Bell's palsy recognition and early care

US exclusion of stroke and structural causes, time-sensitive corticosteroid treatment, corneal protection and follow-up.

JurisdictionUnited States
Source check2026-08-20
Clinical reviewiatroX editorial team 路 Clinical editorial review 路 reviewed 2026-08-20 路 due 2027-08-20
AudienceUnited States healthcare professionals
This is an iatroX educational summary of named United States sources, not an official guideline. It does not replace the complete source documents, local policy, specialist advice or clinical judgement. Use the named authority, current FDA labeling, applicable state law, payer rules and local protocol where relevant.

Scope of this summary

Adults and children with acute unilateral peripheral facial weakness considered idiopathic after an appropriate history and examination. The AAO-HNSF guideline is from 2013 and a replacement is in development, so its adult time-sensitive treatment advice must be clinically rechecked. Neonates, recurrent or bilateral weakness and trauma need separate pathways.
sources for this section:AAO-HNSF Bell palsy 2013

The Bottom Line

  • Confirm weakness of both the upper and lower face and assess other cranial nerves, limbs, speech, coordination and sensation; forehead movement alone is not a perfect stroke rule-out.
  • Do not obtain routine laboratory tests or imaging for a classic new Bell palsy, but investigate when onset, associated features, recurrence or recovery pattern suggests infection, tumor, stroke or another neuropathy.
  • Offer oral corticosteroid treatment within 72 hours to appropriate patients aged 16 years or older under the AAO-HNSF source; individualize diabetes, pregnancy, infection and other contraindications.
  • Protect an eye that does not close with lubrication, nighttime closure or moisture measures and urgent ophthalmic care when corneal exposure or injury is possible.
sources for this section:AAO-HNSF Bell palsy 2013

Practical clinical workflow

1
Document exact onset, progression, ear pain or vesicles, hearing or vestibular symptoms, taste, Lyme exposure, trauma, cancer, prior episodes and systemic or neurologic symptoms.
2
Grade facial movement, inspect ear canal and oropharynx, test eye closure and corneal symptoms, and perform a complete neurologic examination before accepting an idiopathic diagnosis.
3
Start eligible time-sensitive treatment, provide explicit eye-care instructions and explain expected recovery without promising completeness or a fixed timeline.
4
Reassess new or worsening neurologic findings at once and refer incomplete recovery at three months, ocular complications, recurrent palsy or atypical progression to facial nerve or neurologic expertise.
sources for this section:AAO-HNSF Bell palsy 2013

Safety boundaries and escalation

  • Facial weakness with arm or leg deficit, aphasia, diplopia, severe ataxia, altered consciousness or abrupt severe headache requires emergency stroke evaluation.
  • Ear vesicles, severe otalgia, hearing loss or vertigo suggests Ramsay Hunt syndrome and needs prompt antiviral, steroid and specialist consideration rather than Bell palsy labeling alone.
  • Corneal pain, photophobia, redness, foreign-body sensation or reduced vision requires urgent eye assessment because exposure keratopathy can threaten vision.
  • Bilateral, recurrent, slowly progressive or segmental facial weakness should trigger evaluation for Lyme disease, sarcoidosis, tumor, autoimmune disease or another structural cause.
sources for this section:AAO-HNSF Bell palsy 2013

Localization

The AAO-HNSF directory still lists the 2013 source and identifies its replacement as in development. Recheck that directory at each scheduled review.
sources for this section:AAO-HNSF Bell palsy 2013

Source documents

Use the linked source documents for complete recommendations, evidence grading, exclusions and implementation detail.

  1. American Academy of Otolaryngology鈥擧ead and Neck Surgery FoundationClinical Practice Guideline: Bell's Palsypublished 2013-11-04 路 accessed 2026-08-20
    view source
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