Epidemiology

---

Etiology

---

• Idiopathic (most common cause of peripheral facial nerve palsy): Acute idiopathic peripheral facial palsy is also known as Bell palsy.
• Secondary
  • Trauma (e.g., temporal bone fracture)
  • Infection
    • Herpes zoster (Ramsay Hunt syndrome)
    • Borreliosis (Lyme disease)
    • HSV reactivation
    • HIV
    • Malignant otitis externa
  • Tumors (parotid gland tumors, acoustic neuroma)
  • Diabetes mellitus
  • Sarcoidosis (Heerfordt syndrome)

Pathophysiology

---

Clinical features

---

Diagnostics

---

<% tp.file.cursor() %>

Treatment

---

<% tp.file.cursor() %>