UMN signs → Sparing upper face (frontalis, eye-opening)

LMN signs → Not sparing

Acute Facial Weakness DDx

• !Stroke (CVA) → !MCA Stroke (UMN)
• Bell’s Palsy (LMN)
• VZV (HHV3) → Ramsay Hunt Syndrome (LMN)

Chronic Facial Weakness DDx

• Vestibular schwannoma (LMN)
• Meningioma (UMN)
• MS - Multiple Sclerosis