What Causes Facial Paralysis? Risk Factors You Should Know
Facial paralysis is a health issue that affects both aesthetics and function, resulting from the sudden or gradual loss of function of the facial nerve that controls the mimic muscles. There can be many causes for this problem. If you are curious about these causes and want to learn more, you can take a detailed look at our content. We wish you good reading and healthy days.
Viral Origins: Ramsay Hunt Syndrome, Shingles
Ramsay Hunt syndrome, which has a viral origin, is one of the causes of severe facial paralysis. This condition, which occurs when the Varicella-Zoster virus that causes chickenpox reactivates years later, manifests itself with ear pain, rash in the inner ear, and sudden paralysis of the facial muscles. In this context, shingles caused by the virus can also lead to facial paralysis by inflaming nerve tissue during periods of weakened immunity. As a result, the person may experience severe ear pain, a burning sensation, and fluid-filled blisters. For more detailed information on this topic, please see our article titled “Can Shingles Cause Facial Paralysis? Understanding Ramsay Hunt Syndrome.”
Systemic Conditions: Diabetes, Multiple Sclerosis
Facial paralysis, which occurs when small blood vessels narrow and nerves are not adequately nourished, can also occur due to fluctuations in blood sugar. In this context, the facial nerve weakens, transmission slows down, and symptoms of paralysis may appear. In addition, diabetes-related facial paralysis suppresses the immune system, leading to inflammation in the nerve tissue and prolonging the healing process. On the other hand, in multiple sclerosis, the immune system attacks the myelin sheath of the nerves, disrupting communication between the brain and the facial muscles and causing facial paralysis. As a result, since both diseases are chronic, regular monitoring and treatment are of great importance. If you would like to learn more about this topic, you can take a look at our article titled “Can Multiple Sclerosis Cause Facial Paralysis? A Rare But Possible Symptom”
Otitis Media and Chronic Ear Infections
Recurrent middle ear infections can indirectly cause facial paralysis. Ear infections that spread to the narrow bone channels through which the facial nerve passes can weaken the nerve due to pressure and infection, leading to permanent paralysis over time. Chronic ear infections, especially those frequently experienced during childhood, can increase the risk of sudden facial paralysis in adulthood. For this reason, it is necessary to have your ear health checked regularly and treat infections early on. For detailed information on this topic, check out our content titled “How Does Middle Ear Infection Cause Facial Paralysis?”
Facial Paralysis Due to Sinus Infection
Although sinus infections often appear to be minor, they can cause facial paralysis. Therefore, sinus infections should not be viewed as a simple upper respiratory tract disorder. Especially when left untreated, the inflammation that accumulates in the sinus cavities can put pressure on areas close to the facial nerve, or the infection can spread and directly affect the nerve tissue. This can lead to facial paralysis symptoms such as weakness in the facial muscles, asymmetry, drooping of the eyelid, or deviation of the corner of the mouth. Therefore, it must be treated before it is too late. If you would like more detailed information on this topic, please see our article “Can Sinus Infections Cause Bell's Palsy?”
Facial Paralysis During Pregnancy
During the last three months of pregnancy or in the early postpartum period, some mothers may experience facial paralysis due to hormonal fluctuations. In these and similar cases, sudden changes in blood pressure can also cause edema in the canal through which the facial nerve passes, putting pressure on the nerve. Therefore, if weakness in the facial muscles is noticed during pregnancy, it is necessary to consult a doctor without delay. Otherwise, permanent facial paralysis may occur. For more comprehensive information on this topic, please see our article titled “Facial Paralysis During Pregnancy: Causes and Expectations.”
Facial Paralysis After Plastic Surgery
Although cosmetic surgery is frequently chosen today, a single surgical error can cause facial paralysis. This is because the nerve branches that operate in both the superficial and deep layers of the face during cosmetic surgery are very close to the surgical site. These nerves control many basic functions, from the movement of the facial muscles to the closing of the eyelids and the direction of the corners of the mouth. Cutting, damaging, or overstretching these nerves during surgery can disrupt nerve transmission and lead to temporary or permanent facial paralysis. For more detailed information on this topic, please see our article “Can Cosmetic Surgery Cause Facial Paralysis? Risks to Be Aware Of.”
Traumatic Causes: Car Accidents, Sports Injuries
Head injuries, blows to the face, and jaw fractures can cause facial nerve damage or serious injury. Traffic accidents and high-contact sports such as football or boxing are the main causes of these injuries. In this context, paralysis developing after trauma may sometimes be temporary, but nerve rupture can cause permanent consequences. Therefore, if such a situation occurs, you should see a doctor immediately. For more detailed information on this subject, you can review the content “How Car Accidents Can Cause Facial Paralysis: Symptoms and Recovery Options.”
Facial Paralysis Due to Lyme Disease
Lyme disease, which affects many people, can cause facial paralysis. This is because Lyme disease is an infection caused by the bacterium Borrelia burgdorferi entering the body, and this bacterium can directly affect the nervous system. As the infection progresses, it can cause inflammation and impaired nerve conduction, particularly affecting the facial nerve (n. facialis). This can result in sudden-onset facial paralysis (especially unilateral). For more information on this topic, you can review our content titled “How is Lyme Disease Related to Facial Paralysis?”
Dental Procedures and Iatrogenic Nerve Damage
Local anesthetics used during tooth extraction, implant, or root canal treatment can sometimes inadvertently damage branches of the facial nerve. Injections made in the area where the nerve passes, especially in lower jaw surgeries, can result in temporary numbness or paralysis. In this case, the patient may experience sudden numbness in the lip, jaw, or cheek area, difficulty speaking, and temporary asymmetry in the facial muscles. Therefore, you should take the necessary precautions to avoid facial paralysis after dental treatments. Additionally, wisdom tooth treatments can cause facial paralysis if performed incorrectly. The main reason for this is that wisdom teeth are anatomically located very close to the inferior alveolar nerve and the lingual nerve. Especially during the extraction of impacted wisdom teeth, getting too close to the channels through which the nerves pass or coming into direct contact with nerve tissue can cause temporary or, in rare cases, permanent nerve damage in these areas. For this reason, wisdom tooth treatment must be performed by specialist doctors. For detailed information on this subject, please see our content titled Wisdom Teeth and Facial Paralysis.
Tumors and Acoustic Neuroma-Related Risks
An acoustic neuroma, a benign tumor located between the inner ear and the brain stem, grows and presses on the facial nerve, resulting in facial paralysis. If not treated immediately, this condition caused by acoustic neuroma can continue and lead to permanent facial damage. Early diagnosis and regular check-ups are essential to prevent this and similar conditions. For more detailed information, please review our content titled “Facial Paralysis Caused by Tumor.”
Surgical Risks: Blepharoplasty, Rhytidectomy, Parotidectomy
During procedures such as eyelid surgery (blepharoplasty), facelift (rhytidectomy), and salivary gland surgery (parotidectomy), branches of the facial nerve run very close to the surgical site. Particularly in parotidectomy, the nerve passes directly through the gland, posing a high risk of temporary or permanent facial paralysis. In such cases, the patient may experience facial asymmetry, limited movement of the lips or eyelids, loss of facial expressions, and difficulty speaking or eating after surgery, leading to facial paralysis. Therefore, to avoid facial paralysis after a facelift, you should undergo the procedure with a professional surgeon as much as possible. Additionally, eyelid surgeries can sometimes trigger facial paralysis. The reason for this is that the incisions or tissue removal performed during eyelid aesthetics are made in areas very close to the facial nerve branches around the eye (especially the temporal and zygomatic branches of the facial nerve). In this context, the nerves control the closing of the eyelid and the healthy execution of facial expressions. Therefore, excessive tension, pressure, or direct trauma to these nerve branches during surgery can cause temporary or, rarely, permanent nerve damage. For detailed information on this topic, you can take a detailed look at our content titled “Can Eyelid Surgery Cause Facial Paralysis? What You Need to Know Before Blepharoplasty.”
