Related DDx ⬇
Etiology ⬆
- Bell’s palsy (idiopathic)
- HIV
- Lyme disease
- Sarcoidosis
- Ramsay Hunt syndrome (herpes zoster of geniculate ganglion)
- Acoustic neuroma
- Acute or chronic otitis media
- Malignant otitis externa
- Guillain-Barré syndrome
- Tumor, eg, parotid, temporal bone tumor
- Brainstem infarct