Understanding Bell’s Palsy: Know its symptoms, causes, when to worry, and how it’s diagnosed

Bell's palsy is a condition wherein the person may suffer from paralysis or weakness of the facial muscles, commonly occurring on one side of the face. Even though it looks serious, it is not and, in some cases, self-resolving within weeks and months. It occurs because of the enlargement of the seventh cranial nerve responsible for the functioning of the facial muscles, and gets triggered because of viral infections, stress, or other factors. It is necessary to be aware of it at an initial stage, wherein one should be alarmed by serious ailments like a stroke. Even though symptoms develop quickly and reach a peak within 48 to 72 hours, it is good to be aware of it at the earliest because one may recover completely within a few weeks.

What is Bell’s Palsy and its causes

Bell’s palsy is marked by a temporary paralysis of the facial muscles due to which patients are left with the paralysis of one side of the face or a facial droop on one side. Facial paralysis of the other side may also occur in a few people. The condition was first identified by Sir Charles Bell, a Scott surgery skilled in the 19th century. The condition peaks in 48 to 72 hours. In most cases, the condition does not turn out to be severe. Nonetheless, it is imperative to note that it can be linked to a stroke or a neurological emergency.

Bell's palsy is caused by inflammation and pressure on the seventh nerve, which is responsible for all of the face's muscle movement and is responsible for sending nerve messages for taste stimulation. Viral infections are recognized precipitants of Bell's palsy and include:

• Herpes simplex virus (cold sores)
• Varicella-zoster virus (chickenpox or shingles)
• Epstein-Barr virus (mononucleosis)
• COVID-19

Other triggers include stress, weakened immunity, trauma, sleep deprivation, or autoimmune conditions. Risk factors increasing the likelihood of Bell’s palsy include:

• Diabetes
• Obesity (BMI ≥ 30)
• High blood pressure
• Pregnancy or preeclampsia
• Previous episode of Bell’s palsy
• In many cases, however, have no identifiable cause.

Symptoms of Bell’s Palsy

The hallmark symptom of Bell’s palsy is facial drooping on the affected side. Other associated signs include:

• Weakness or paralysis of the forehead, eyebrow, eyelid, and corner of the mouth
• Inability to perform facial expressions like blinking and smiling
• Numbness, heaviness, or pain in the face
• Drooling or speaking, eating, and drinking difficulties
• Dry eyes or irritation
• Headache and ear pain
• Loss of taste

Ringing in the ears or being sensitive to sound (Hyperacusis or Tinnitus) There could be some warning symptoms like low fever or discomfort in the back of the ear, but once the illness sets in, there is no way to avoid or prevent it. After that, the symptoms tend to reach their peak very quickly within two to three days.

How to diagnose Bell’s palsy

Diagnosis of Bell’s palsy is largely based on symptoms such as physical examination and patient history. The primary diagnostic criteria of Bell’s palsy are the acute onset of facial weakness and the sagging of the forehead. To further prevent misdiagnosis of Bell’s palsy in favor of other conditions, physicians carry out further tests for conditions such as:

• Stroke
• Lyme Disease
• Sarc
• Tumours close to the Facial Nerve
• Multiple sclerosis
• Middle Ear Infections

Investigations may include blood tests, electromyography studies (EMG) to evaluate nerve activity, magnetic resource imaging (MRI) or CT scan studies, and sometimes lumbar punctures to evaluate for infections or autoimmune diseases.

Prevention tips

There is no guaranteed way to prevent Bell’s palsy. While viral infections may trigger the condition, not everyone exposed develops it. Managing risk factors such as diabetes, obesity, and high blood pressure may help reduce susceptibility.

Living with Bell’s palsy:
Patients can support recovery and reduce complications by:

• Protecting the affected eye
• Practicing facial exercises as advised
• Ensuring adequate rest and stress management
• Following up with healthcare providers for monitoring
• Education, reassurance, and early supportive care are key to managing the physical and emotional impact of the condition.

Disclaimer: This article is intended for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.