Facial synkinesis refers to "simultaneous movement" that occurs after Bell's palsy or instances where the facial nerve has been cut and sewn back together. After Bell's palsy, the facial nerve fibers may be implanted into different muscles. Or, if the facial nerve has been resewn, the facial nerve fibers may reconnect to the wrong nerve group, leading to undesired and simultaneous facial movements.
Synkinesis results in an abnormal synchronization of facial movement. When this happen, involuntary facial movement may occur during voluntary movement of a different facial muscle group.
What Are the Signs of Synkinesis?
Common signs of synkinesis include:
- The eyes narrow when an individual smiles
- The cheek lifts when a person closes his or her eyes
- The neck muscle tightens when a person tries to whistle
- Facial twitching in the cheek and chin
- Facial muscles become tight, leading to facial pain and headaches
- A deeper cheek crease forms on the affected side of the face, causing the cheek to appear bulky
Many symptoms are associated with synkinesis, including:
- Increased tone in the facial muscles: Muscle tone may increase in the affected side of an individual's face. In fact, a person likely will need to work two to three times harder to move these muscles than he or she would to move the muscles in the unaffected side of the face.
- Short, tight facial muscles: Facial muscles may become short and tight if they are overworked for an extended period of time. When this occurs, it may be difficult for an individual to move the muscles to display facial expressions.
- Linked facial movements: Linked facial movements will happen if a recovering facial nerve is poorly insulated. In this scenario, the message to move a particular muscle may be picked up by a nearby muscle, resulting in several simultaneous muscle movements (ie. when the patient smiles their eye narrows and closes too). Furthermore, linked facial movements may continue to occur after the facial nerve has fully recovered.
- Coordination problems: Coordinating facial movements can be exceedingly difficult, particularly for those who are recovering from a facial nerve issue.
The images below demonstrate various degrees of synkinesis:
Facial synkinesis and full paralysis of the face are not the same. If a patient displays good facial tone and visible facial movement, he or she does not suffer from full facial paralysis. In this case, the patient's abnormal facial movements may be the result of synkinesis.
A synkinesis patient may display various facial muscle patterns. In many instances, a synkinesis patient's eyes may twitch or close when this individual laughs or smiles. Also, facial synkinesis may cause the corner of the mouth to pull upward in patients who have regained their facial tone. The synkinetic (simultaneous) movement of muscles can cause the corner of the mouth (depressor anguli oris, platysma and mentalis muscles) to droop and elevate nearby muscles (zygomaticus major and minor). Therefore, it may be difficult for a synkinesis patient to smile appropriately.
Other signs of facial synkinesis include:
- Dimpling in the chin
- Narrowing of the eyes
- Increased facial muscle spasms
- Tightness of the neck bands and cheeks
Synkinesis often results in facial muscle patterns that can range in severity. As a result of Dr. Azizzadeh’s advancements in the field of facial reanimation surgery, patients now have several treatment options to choose from to improve their synkinesis.
How to Prevent Synkinesis
There are some things patients can do to prevent synkinesis from developing after Bell’s palsy. Today, Chevalier's method represents the most common technique to prevent synkinesis. This method serves as a form of "facial re-education" and encourages patients to maintain facial symmetry by:
- Keeping the face up when speaking
- Chewing food with the eyes open
- Avoiding gum
- Wearing sunglasses to prevent squinting
- Massaging the intraoral buccal area
- Stretching the eye muscles
Synkinesis prevention involves a proactive approach in the initial three to four months after injury or Bell's palsy. It is important to consult with an experienced occupational therapist or physical therapist who can provide the patient with a specific set of exercises that are appropriate for their unique presentations of Bell’s palsy.
Synkinesis treatment is based on three modalities:
- Synkinesis surgery
- Neuromuscular retraining (physical therapy)
- Botox (botulinum toxin) for synkinesis
Synkinesis treatment can be administered any time after the condition is diagnosed. Furthermore, a patient can use neuromuscular retraining, Botox for synkinesis or synkinesis surgery to treat synkinesis several years after suffering from Bell's palsy or facial paralysis.
Selective neurolysis is the most advanced surgery option for patients with synkinesis. Dr. Azizzadeh pioneered the selective neurolysis procedure for his patients who could not generate a proper smile due to their synkinesis and partial facial paralysis.
During selective neurolysis, Dr. Azizzadeh releases the platysma muscle, decreasing nerve activity that pulls the mouth downward and enabling the corners of the mouth to turn upward once again. Furthermore, selective neurolysis is a complex and intricate procedure, but the recovery period is rather minimal, similar to that of a facelift.
Other treatment options to address synkinesis include:
- Static suspension of the corners of the mouth
- Blepharoplasty (eyelid surgery)
- Asymmetric Facelift
During your consultation, all options are discussed at length to determine if you are an appropriate candidate.
Botox for Synkinesis
Botox for synkinesis may be used in combination with selective neurolysis and/or facial neuromuscular therapy. It reduces muscle activity, minimizing the synkinesis effects associated with overactive and uncoordinated muscles.
The most common injection areas for Botox for synkinesis are:
- Eye muscles (orbicularis)
- Neck bands (platysma)
- Chin dimpling (mentalis)
Botox for synkinesis can also be used to improve facial symmetry by reducing the activity of certain muscles on the normal side of the face, such as:
- Lower lip depressors (depressor anguli oris)
- Crow's feet (orbicularis)
Physical Therapy for Synkinesis
Facial neuromuscular retraining emphasizes the coordination of appropriate facial muscle movements. With facial neuromuscular retraining, a synkinesis patient can limit abnormal movement patterns that otherwise would result in "auto-paralysis" of different facial muscle groups. At The Facial Paralysis Institute, we stress the importance of developing a completely customized neuromuscular retraining program with an expert therapist. Every patient is unique and therefore it is vital their program is created to address their specific needs for improvement.
During physical therapy for synkinesis, the muscles that are contracting out of sequence will be identified. Then, a multi-step process is used to help a patient retrain the muscles at the neurological (brain) level. Our therapists may use both neuromuscular retraining and massage techniques to provide you with the best results.
Electrical stimulation increases overactive muscles, and as such, should not be used as part of neuromuscular training. Instead, overactive muscles in the cheeks and neck are manually massaged and stretched, and patients are taught how to elevate the upper eyelids during eating to reduce eye synkinesis. In addition, neuromuscular retraining focuses on muscle re-coordination rather than stimulation, and synkinesis patients should not perform muscle-strengthening exercises as part of this treatment.
Neuromuscular Retraining for Facial Paralysis After Bell's Palsy Video
Typically, 90 percent of synkinesis exercises can be performed at home. A therapist will teach a patient how to perform synkinesis exercises properly and ensure that he or she fully understands the ins and outs of each exercise. The therapist may teach a patient how to perform mirror and video exercises as well.
While it may be tempting to “google” excercise for synkinesis, we strongly urge against this! It is very important to understand that each patient has unique needs for their physical therapy protocols, and it is possible that doing the wrong exercises for you will actually create more problems for you.
Request your consultation with Dr. Azizzadeh today
Call us at (310) 657-2203 to schedule an appointment.Schedule a Consultation