Bell's Palsy

Overview

Bell's palsy is the most common cause of acute facial palsy. It typically develops over hours to days and may be preceded by ear pain or cold symptoms. Most patients recover fully within weeks to months, though some experience incomplete recovery or complications such as synkinesis (abnormal facial movements). Early treatment with corticosteroids improves outcomes. Dr. Jitendra Prasad Yadav evaluates and manages Bell's palsy, distinguishing it from other causes of facial weakness.

Symptoms

• Sudden weakness or paralysis of one side of the face
• Inability to close the eye on the affected side
• Drooping of the mouth corner
• Difficulty eating — food collects between cheek and gums
• Teariness or dryness of the eye on the affected side
• Pain around or behind the ear on the affected side
• Altered taste on the front two-thirds of the tongue (dysgeusia)
• Sound sensitivity (hyperacusis) on the affected side

Causes

• Exact cause is uncertain; reactivation of herpes simplex virus (HSV-1) is a leading hypothesis
• Other viral infections (varicella-zoster, cytomegalovirus) may contribute
• Immune-mediated inflammation of the facial nerve at the narrowest point of its bony canal
• Rarely associated with Lyme disease, sarcoidosis, or Ramsay Hunt syndrome (varicella-zoster)

Risk factors

• Age 15–60
• Pregnancy (second trimester highest risk)
• Diabetes mellitus
• Upper respiratory infection
• Immunosuppression
• Family history of Bell's palsy (rare)

Diagnosis

Clinical diagnosis based on unilateral facial weakness of acute onset. Examination distinguishes upper motor neuron (forehead spared — e.g., stroke) from lower motor neuron (forehead involved — Bell's palsy) patterns. MRI may be considered if recovery is atypical or other causes are suspected. Dr. Jitendra evaluates the pattern of weakness to exclude stroke, Ramsay Hunt syndrome, and other causes.

Treatment & management

Oral corticosteroids (prednisolone) started within 72 hours of symptom onset improve recovery rates. Antivirals (acyclovir or valacyclovir) may be added in severe cases. Eye care is essential — lubricating drops, eye patching at night to prevent corneal damage. Physiotherapy and facial exercises may support recovery. Surgical decompression is rarely considered.

Management is individualized and discussed with benefits, limitations, and follow-up.

Prevention & self-care

No proven prevention. Prompt treatment of upper respiratory infections and early medical evaluation for acute facial weakness improve outcomes. Patients with diabetes should be monitored for steroid-related blood sugar changes.

When to seek medical attention

• Sudden facial weakness — seek evaluation within 72 hours for steroid treatment
• Inability to close the eye — risk of corneal damage requires urgent eye protection
• Facial weakness with hearing loss, severe ear pain, or vesicles (suggests Ramsay Hunt syndrome)
• Facial weakness with limb weakness, slurred speech, or other neurological symptoms (suggests stroke — emergency)
• No improvement after 3 weeks — requires re-evaluation

Frequently asked questions