Bell’s palsy recurs in about 8% to 12% of people who have had it, with an average gap of roughly 10 years between episodes. While there’s no guaranteed way to prevent a second episode, managing certain health conditions, recognizing early warning signs, and reducing known triggers can meaningfully lower your risk.
Why Bell’s Palsy Comes Back
The leading theory centers on herpes simplex virus type 1 (HSV-1), the same virus responsible for cold sores. After an initial infection, the virus goes dormant in nerve cells near the facial nerve. Heat, physical stress, ultraviolet light, or trauma can reactivate it. When that happens, the virus begins reproducing inside the nerve cells, triggering inflammation and swelling within the narrow bony canal that houses the facial nerve. The resulting pressure on the nerve is what causes paralysis.
Not everyone who gets Bell’s palsy once will get it again, but certain factors make recurrence more likely: uncontrolled diabetes, high blood pressure, pregnancy, and a family history of facial palsy. In families with a genetic predisposition, differences in immune function may make the facial nerve more vulnerable to inflammation after viral reactivation.
Manage the Conditions That Raise Your Risk
Diabetes and high blood pressure are the two most consistently linked medical conditions. Both damage small blood vessels, including those that supply the facial nerve. Keeping blood sugar and blood pressure well controlled won’t eliminate risk entirely, but it removes a major contributing factor. If you’ve had Bell’s palsy and haven’t been screened for diabetes or hypertension, it’s worth getting checked.
Pregnancy is another period of elevated risk, likely due to the immune system changes and fluid retention that occur during the third trimester. There’s nothing to “do” about this one beyond being aware of it, but knowing the early warning signs (covered below) can help you act fast if symptoms begin.
Reduce Viral Reactivation Triggers
Since HSV-1 reactivation is the suspected trigger in many cases, anything that keeps the virus dormant works in your favor. The known reactivation triggers overlap heavily with things that suppress immune function:
- Physical and emotional stress. Chronic stress weakens immune surveillance of dormant viruses. Consistent sleep, regular exercise, and stress management aren’t just general wellness advice here. They directly affect your body’s ability to keep HSV-1 in check.
- Illness and immune suppression. A bad cold, the flu, or any period of immune compromise gives dormant viruses an opportunity. Staying current on vaccinations and practicing good hygiene during cold and flu season reduces the number of immune “dips” you experience each year.
- UV exposure and extreme temperatures. Ultraviolet light and heat are documented HSV-1 reactivators. Wearing sunscreen on your face, avoiding prolonged direct sun, and protecting yourself in extreme cold (which also stresses the immune system) are simple, practical steps.
Know the Early Warning Signs
Bell’s palsy doesn’t strike without warning. Most people experience prodromal symptoms one to two days before facial weakness appears. The most common is a dull ache behind or inside the ear on the affected side. Other early signals include a metallic taste on one side of the tongue, tongue numbness on the same side, unusual eye dryness, or a sense of nasal stuffiness on one side of the face.
If you’ve had Bell’s palsy before, you already know what these early signs feel like. Recognizing them quickly matters because treatment with corticosteroids is most effective when started within 72 hours of symptom onset, and ideally much sooner. Having a conversation with your doctor now, before a recurrence, about what to do if you notice these symptoms can save critical time.
Antiviral Prophylaxis: Limited but Promising
One obvious question is whether taking antiviral medication long-term could prevent recurrence. The honest answer is that no randomized controlled trial has tested this. Small case series and individual reports suggest that daily antiviral medication may help people who experience frequent or especially disabling relapses, particularly those who are immunocompromised or have confirmed HSV-1 involvement.
Some specialists take a risk-stratified approach: for someone who has had two or more episodes, especially with a family history or immune issues, preventive antiviral therapy may be reasonable to discuss. This is a conversation worth having with a neurologist if you’ve already had multiple episodes, but it’s not yet a standard recommendation for everyone after a single recurrence.
Support Nerve Health Through Diet
Vitamin B12 plays a role in maintaining the protective coating (myelin) around nerves, including the facial nerve. It’s used clinically for peripheral nerve damage, and some research suggests it may support faster recovery of facial nerve function in Bell’s palsy patients. If you eat a diet low in animal products, or if you’re over 50 (when B12 absorption naturally declines), checking your B12 levels and supplementing if needed is a straightforward step.
More broadly, an anti-inflammatory dietary pattern can help keep systemic inflammation in check. This means emphasizing fruits, vegetables, whole grains, fatty fish, nuts, olive oil, and legumes while limiting red and processed meat, refined carbohydrates, sugary drinks, and excessive alcohol. The key anti-inflammatory nutrients are omega-3 fatty acids (from fish, walnuts, and flaxseed), fiber, vitamins C and E, magnesium, and zinc. Herbs and spices like turmeric, ginger, and garlic also have anti-inflammatory properties. The Mediterranean diet is the most studied version of this pattern, but the core principle is simple: more whole foods, fewer processed ones.
Chronic systemic inflammation has been linked to neuronal damage and is believed to make nerve tissue more vulnerable. While no study has directly proven that dietary changes prevent Bell’s palsy recurrence specifically, reducing the inflammatory baseline in your body creates a less hospitable environment for the kind of nerve inflammation that causes facial paralysis.
Rule Out Conditions That Mimic Recurrence
If facial paralysis keeps coming back, it may not actually be Bell’s palsy. Melkersson-Rosenthal syndrome is a rare condition that causes recurrent facial palsy alongside facial or lip swelling and a fissured (grooved) tongue. The full triad of symptoms appears in only 8% to 25% of cases, so it’s easy to miss. Lip or facial swelling is the most common feature, showing up in 80% to 100% of patients, while facial paralysis occurs in 47% to 90%.
Unlike the temporary swelling you might see with an allergic reaction, the facial swelling in Melkersson-Rosenthal syndrome develops gradually and can become permanent after multiple relapses. Early diagnosis matters because the treatment approach differs from Bell’s palsy, and catching it sooner can prevent lasting cosmetic changes. If you’ve had more than one episode of facial paralysis, especially if you’ve also noticed unexplained lip swelling or changes in your tongue’s texture, bring these details to your doctor’s attention.