Facial Synkinesis: What Is It and Why Does It Happen?
- Gautham Ullas
- 6 hours ago
- 5 min read
Have you ever noticed that when you try to smile, your eye closes involuntarily? Or maybe when you blink, one corner of your mouth pulls upward? If you're experiencing these unusual facial movements, you might be dealing with something called facial synkinesis.
Don't worry: you're not alone, and there's a logical explanation for what's happening. Facial synkinesis is more common than you might think, especially for people who've recovered from facial paralysis. Let's break down what it is, why it happens, and what you can do about it.
What Exactly Is Facial Synkinesis?
Think of facial synkinesis as your facial muscles playing a game of "follow the leader": except they're following the wrong leader. When you try to move one part of your face, other parts tag along uninvited.
The word "synkinesis" literally means "moving together," and that's exactly what happens. Your facial muscles that should work independently start working as a team, even when you don't want them to. This creates those unexpected, involuntary movements that can feel frustrating and confusing.
For example, you might experience:
Your eye squinting when you smile
Your cheek lifting when you try to close your eyes
Your neck muscles tightening when you whistle
Facial twitching in your cheek or chin area
The important thing to remember? This isn't a sign that something is seriously wrong with you. It's actually your body's way of trying to heal itself: it just got a little mixed up along the way.
Why Does Synkinesis Happen?
Here's where things get interesting from a medical perspective, but we'll keep it simple. Facial synkinesis happens because of something called "miswiring" in your facial nerve.
Your facial nerve is like the electrical system in your house: it carries signals from your brain to all the muscles in your face. Normally, each "wire" (nerve fiber) connects to specific muscles. When you want to smile, the brain sends a signal down the exact nerve pathway that controls your mouth muscles.
But here's what happens when your facial nerve gets injured:
The Healing Process Goes Awry
When your facial nerve is damaged: whether from Bell's palsy, an infection, trauma, or surgery: your body immediately starts the repair process. Think of it like fixing a damaged electrical cable. Sometimes during the repair, the wires get crossed.
As your facial nerve regenerates, some nerve fibers take wrong turns. Instead of reconnecting to their original muscle groups, they branch off and connect to different muscles. So now, when your brain sends a "smile" signal, it might travel not just to your mouth muscles, but also to your eye muscles.
The Unique Challenge of Facial Nerves
Your facial nerve faces a unique challenge that other nerves in your body don't have. As it travels through your face, it splits into more and more branches, creating what doctors call "redundancies", basically backup pathways.
During healing, nerve fibers can accidentally take these backup routes and end up in the wrong place. It's like taking a detour during road construction and ending up in a completely different neighborhood than where you intended to go.
What Causes Facial Synkinesis?
Synkinesis doesn't just appear out of nowhere: it's usually the result of facial nerve injury or damage. The most common causes include:
Bell's Palsy
This is probably the most well-known cause of facial paralysis. About 20% of people who recover from Bell's palsy develop synkinesis. The longer the affected side is weak, the higher the risk of synkinesis. The link is often missed as the abnormal movements may not start for years after recovery from the weakness.
Ramsay Hunt Syndrome
This condition is caused by the same virus that causes chickenpox and shingles. If you've had Ramsay Hunt syndrome, you have about a 40% chance of developing synkinesis: higher than Bell's palsy, but still manageable.
Trauma and Injuries
Head injuries, facial injuries, or surgical complications can damage the facial nerve. This includes procedures to remove tumors near the facial nerve.
The Timeline
Don't expect synkinesis to show up immediately after your initial facial paralysis. It's a delayed reaction that typically appears months or even years later: usually between 2-3 years after your original injury. This delay happens because it takes time for your nerves to regenerate and create those crossed connections.
What Does Synkinesis Look and Feel Like?
Everyone's experience with synkinesis is different, depending on which nerve pathways got mixed up during healing. But there are some common patterns you might recognize:
Eye-Related Movements
Your eye narrows or closes when you smile
Your cheek lifts when you try to close your eyes
You might get watery eyes when you eat (this happens because tear-producing nerves got crossed with other facial nerves)
Mouth and Cheek Issues
Your mouth corner pulls upward when you blink
Your cheek feels tight or bulky, even when you're relaxed
You might notice a deeper crease on the affected side of your face
Neck and Jaw Problems
Your neck muscles tighten when you try to make certain facial expressions
You might feel tension when eating, speaking, or making other movements
The "Tight" Feeling
Here's something important to understand: the muscles affected by synkinesis aren't actually weak: they're tight and overactive. You might feel like that side of your face is constantly "switched on," leading to:
Facial pain
Headaches
A feeling of heaviness or stiffness
General fatigue in your face
Living With Synkinesis: What You Need to Know
First, take a deep breath. While synkinesis can be frustrating, it's not dangerous, and there are effective treatments available.
It Won't Fix Itself
Unlike some medical conditions that improve with time, synkinesis typically doesn't get better on its own. But that doesn't mean you're stuck with it forever: it just means you'll likely need some professional help to manage it effectively.
You're Not Imagining Things
Sometimes people with synkinesis feel like others don't notice their symptoms, or they worry they're being overly sensitive about subtle changes in their face. Trust your instincts: if you're experiencing these movements, they're real and valid.
It Affects Everyone Differently
Your experience with synkinesis might be completely different from someone else's. Some people have mild symptoms that are barely noticeable, while others have more pronounced movements that significantly impact their daily life.

Treatment Options: You Have Choices
The good news is that synkinesis is very treatable. The most effective approach usually combines several strategies:
Facial Rehabilitation Therapy
This is often the first line of treatment. A specialized physical therapist will teach you:
Massage techniques to help relax tight muscles
Specific exercises designed to retrain your facial movements
Relaxation strategies to reduce overall muscle tension
Think of this as physiotherapy for your face: it takes time and practice, but it can make a real difference.
Botulinum Toxin Injections
You might know this better as Botox, but when used for synkinesis, it's purely medical. Small injections can help:
Relax the overactive muscles that are causing unwanted movements
Allow weaker muscles to function better
Reduce facial pain and tension
The Power of Combination
Research shows that facial therapy and botulinum toxin work best when used together. It's like having a one-two punch against synkinesis: the therapy helps you learn new movement patterns, while the injections give your muscles the chance to practice those patterns without interference.
Additional Support
Depending on your specific symptoms, you might also benefit from:
Speech therapy if synkinesis affects your speaking
Occupational therapy for daily activities
Working with a facial plastic surgeon for more severe cases
Moving Forward With Confidence
Remember, facial synkinesis is your body's attempt to heal itself: it just needs a little guidance to get back on track. With the right treatment approach, most people see significant improvement in their symptoms.
If you're dealing with these unusual facial movements, don't wait to seek help. The sooner you start treatment, the better your results are likely to be. And remember, you're not alone in this journey: there are medical professionals who specialize in exactly these types of conditions and want to help you feel like yourself again.

Your face is an important part of how you express yourself and connect with others. You deserve to feel confident and comfortable in your own skin, and with the right support, that's absolutely achievable.

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