I have previously written about listening difficulties, fatigue, and brain fog after acoustic neuroma. But these are not the only challenges people face.
The acoustic neuroma tumour sits in an area that is rich in nerves. As it grows, it does not only affect hearing and balance. It can begin pressing on nearby nerves, and suddenly the symptoms extend beyond the ear. Because these nerves sit so close together, acoustic neuroma surgery also carries a risk of stretching or bruising them.
One such outcome is facial numbness after translabyrinthine surgery.
There is a sensation many of us experience after translab surgery that is difficult to explain unless you have lived it.
You touch your face.
You know you are touching it.
But you cannot really feel it.
It is not pain.
It is not paralysis.
It is absence.
For me, it felt like the numbness after a dental injection. The heaviness. The dullness. The strange sense that my cheek and jaw were there, but not fully connected to me anymore. I kept touching my face, not because it hurt, but because my brain needed reassurance.
If you are experiencing facial numbness after acoustic neuroma surgery, I want to help explain why this happens. I believe a little understanding always helps. So let us start with the nerve responsible.
The Trigeminal Nerve and Facial Numbness
Most patients are warned about the facial nerve. Smiling. Blinking. Drooping. That nerve gets a lot of attention.
But facial numbness after translab surgery usually involves a different nerve: the trigeminal nerve.
The trigeminal nerve is responsible for sensation in the face and for chewing. It sits deeper and closer to where the acoustic neuroma grows. If your tumour was large, this nerve may have been pushed, stretched, or flattened for months or even years before surgery.
In many cases, surgery does not damage the trigeminal nerve itself. Instead, removing the tumour releases long standing pressure, and the nerve then has to relearn how to function.
Why Facial Numbness Feels So Disturbing
Facial numbness is not just loss of sensation. It is loss of feedback.
Normally, your brain constantly knows where your cheek is, where your tongue is, and how hard you are chewing. When the trigeminal nerve is not sending clear signals, that internal map becomes unreliable.
This explains common symptoms such as:
Food collecting in the cheek without you noticing
Biting your cheek or tongue
Chewing feeling awkward or unbalanced
It is not clumsiness. It is missing information.
And the brain does not cope well with missing information.
The hardest part of facial numbness is not the sensation itself.
It is the disconnect
Looking in the mirror and seeing your face move normally, but not feeling it the way you used to. Touching your cheek repeatedly, not for comfort, but for confirmation.
Trigeminal Nerve Damage Symptoms After Surgery
The effects of trigeminal nerve irritation or injury do not appear the same in everyone. Symptoms can change over time.
In the weeks and months after translabyrinthine surgery, facial numbness often evolves rather than staying the same.
You may experience:
Tingling sensations
Buzzing feelings in the face
Pins and needles
Sudden electric shock like zaps that come and go
These symptoms can appear without warning and disappear just as quickly. If nobody has explained this to you, it can be frightening.
In more severe cases, especially when facial numbness turns into ongoing pain, doctors may prescribe medications such as anticonvulsants to calm the nerve.
However, in most cases, these sensations are a sign that the trigeminal nerve is trying to reconnect and reorganise itself after long term compression.
It is not smooth.
It is not predictable.
And it takes time.
Facial Numbness Recovery Timeline
Nerves do not recover like muscles. Trigeminal nerve recovery is slow.
Not weeks.
Not a couple of months.
Often many months to a year, sometimes longer.
During the first few months after acoustic neuroma surgery, symptoms often fluctuate. Sensation can change from day to day.
Between six and twelve months is when most recovery tends to happen, if it is going to happen at all.
After around two years, any facial numbness that remains is more likely to be permanent. However;
Over time, something changes.
You stop checking.
You stop thinking about it constantly.
You realise hours have passed without noticing it.
That is not giving up.
That is neurological adaptation.
Jaw Weakness and Chewing Problems After Surgery
Because the trigeminal nerve also controls chewing muscles, facial numbness is often accompanied by jaw weakness.
Chewing may feel uncoordinated on one side. Many people unconsciously switch to chewing on the other side, which can later lead to jaw discomfort or strain.
I am more than one year post translab surgery, and I still chew using only one side. I cannot use both. This is my reality, and it is something I have learned to adapt to.
A Reassurance for Those Living With Facial Numbness
Facial numbness after acoustic neuroma surgery is a recognised outcome, especially with larger tumours. It does not mean surgery failed. It does not mean recovery has stopped.
It means the trigeminal nerve has been through a long journey and needs time.
Give it at least two years. Recovery is slow. And even when sensation does not fully return, the brain adapts. You learn to live around it.
If you are touching your face right now and wondering if this numbness is permanent, hear this clearly.
You are not alone.
If you prefer audio, you can listen to the podcast version here.
If you prefer visual content, you can watch the YouTube version of this topic here
my numbness has been with me for four years now. In reading this article, I am saddened and depressed to realize that is most likely permanent. So. very. uncomfortable.