Bell's Palsy: Causes, symptoms and recovery

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## Bell’s Palsy: Causes, Symptoms and Recovery

Bell’s palsy is a sudden weakness or paralysis of the muscles on one side of the face, making it appear to droop. It is named after Scottish surgeon Sir Charles Bell, this condition results from inflammation or swelling of the facial nerve (Cranial Nerve VII). Though the exact cause is unknown, viral infections such as herpes simplex and herpes zoster are often linked to its development.

Bell’s palsy can occur at any age, though it is most commonly seen in individuals between 15 – 65 years. It is the most common cause of acute facial paralysis, accounting for nearly 60–75% of unilateral facial palsy cases. The condition usually develops suddenly, often overnight with symptoms like drooping of one side of the face, difficulty closing the eye or smiling, drooling, loss of taste and pain around the jaw or ear. Increased sensitivity to sound and watery or dry eyes may also occur. Because these symptoms can resemble those of a stroke, it’s important to seek medical help immediately for proper diagnosis.

Although the condition can be alarming, most people recover completely within three to six months. Corticosteroids such as prednisone are commonly prescribed to reduce nerve inflammation, especially when started early. Antiviral medications may be added in severe cases, though their benefit remains uncertain.

Physiotherapy plays a key role in recovery. Techniques such as facial massage, mirror biofeedback, electrical stimulation for facial muscles, neuromuscular retraining and mime therapy help maintain muscle tone and prevent long-term complications like synkinesis (involuntary muscle movements). Gentle exercises like raising eyebrows, closing eyes tightly, puffing cheeks and smiling support nerve healing. Protecting the affected eye with lubricating drops, ointments or an eye patch is also crucial to prevent dryness and injury.

Most patients experience partial or complete recovery, though in rare cases, permanent nerve damage or abnormal facial movements may persist. Surgery is rarely recommended today due to potential risks, though plastic or reconstructive procedures can help restore facial symmetry in severe cases.

With early treatment, consistent physiotherapy, and proper eye care, the outlook for Bell’s palsy is highly favourable and most people regain full facial function over time.

_Mrs. Sreedevi
HOD, Department of Physiotherapy
SUT Hospital, Pattom_