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ENTNeurology

Bell's Palsy / Facial Nerve Palsy

Distinguish Bell's (idiopathic LMN) from secondary; oral steroid + eye protection.

Source: ENT UK 2017; AAN

Step 1 of ~2
info

Recognise + Differentiate

Bell's palsy: acute (<72h) idiopathic peripheral (LMN) facial paralysis. Diagnosis of exclusion. LMN vs UMN: LMN affects forehead (cannot raise eyebrow); UMN spares forehead. Exclude secondary: stroke, Ramsay Hunt (vesicles in ear / palate; severe pain), Lyme (especially endemic; bilateral), otitis media, tumour, trauma, MS, sarcoidosis.

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only. Always apply local guidelines and clinical judgement.