Involuntary Muscle Contractions at the Mouth Corner

Q: Involuntary Muscle Contractions at the Mouth Corner

Hello： The movement of the muscles at the corners of the mouth is controlled by the facial nerve. <br>If you are experiencing twitching in other facial muscles in addition to the corners of your mouth, your symptoms may be indicative of facial nerve spasms. <br>Current research s

Involuntary contraction of the corners of the mouth?

Hello Dr.
Jiang: I have noticed that the muscles at the corner of my right mouth are experiencing involuntary contractions (not twitching).
A small area of muscle tightens continuously for about 2-3 seconds and then relaxes on its own (similar to the feeling of a string being pulled tight and then released), occurring quite frequently, about every 3-5 minutes.
Aside from this, there are no wounds or other abnormal sensations.
I am concerned that there may be an issue with my facial nerve.
Should I start taking B vitamins to observe the situation, or do I need to seek medical attention immediately? Thank you.

Shen Xiaojie, 30~39 year old female. Ask Date: 2020/07/14

Dr. Jiang Junyi reply Neurology

Hello: The movement of the muscles at the corners of the mouth is controlled by the facial nerve.
If you are experiencing twitching in other facial muscles in addition to the corners of your mouth, your symptoms may be indicative of facial nerve spasms.
Current research suggests that the causes of muscle twitching are primarily related to several factors: exercise, acute viral infections, anxiety, and medication use.
Prolonged exercise is one of the main contributors to muscle twitching.
Common medications that can cause muscle twitching include diuretics, corticosteroids, estrogens, and excessive caffeine.
Additionally, some studies suggest that pesticides, particularly organophosphates and other chemical toxins, can also lead to muscle twitching.
In clinical practice, we often observe many patients caught in a vicious cycle where mild muscle twitching causes anxiety, which in turn exacerbates the twitching, leading to increased panic and anxiety in the patient.
Treatment may involve the use of muscle relaxants, and more severe cases might require botulinum toxin injections.
It is advisable for you to consult a neurologist for discussion and treatment.
Wishing you good health, peace, and happiness.
Dr.
Jiang, Neurology Department, cares about you.

Reply Date: 2020/07/14

More Info

Involuntary muscle contractions at the corner of the mouth, as you described, can be concerning, especially if they are frequent and persistent. These contractions may be indicative of several underlying conditions, and it is essential to approach this symptom with a comprehensive understanding.

Firstly, the phenomenon you are experiencing could be related to a condition known as "facial spasms" or "hemifacial spasm." This condition is characterized by involuntary contractions of the facial muscles, often starting around the eye and potentially affecting other areas, including the mouth. Hemifacial spasms can be caused by irritation or compression of the facial nerve (cranial nerve VII), often due to a blood vessel pressing against the nerve. Other potential causes include neurological conditions, stress, or even fatigue.

Another possibility is that these contractions could be a form of muscle twitching or fasciculation, which can occur due to various reasons, including electrolyte imbalances, fatigue, or even anxiety. Stress and anxiety can lead to muscle tension and spasms, which may explain the involuntary contractions you are experiencing.

Regarding your question about taking B vitamins, B vitamins, particularly B1 (thiamine), B6 (pyridoxine), and B12 (cobalamin), play crucial roles in nerve health and function. Deficiencies in these vitamins can lead to neurological symptoms, including muscle twitching and spasms. While taking a B-complex supplement may be beneficial if you suspect a deficiency, it is not a substitute for a proper medical evaluation.

Given that your symptoms are frequent and concerning, it is advisable to seek medical attention rather than solely relying on self-treatment with supplements. A healthcare professional can conduct a thorough examination, possibly including neurological assessments, to determine the underlying cause of your symptoms. They may also recommend imaging studies, such as an MRI, to rule out any structural issues affecting the facial nerve.

In the meantime, consider keeping a symptom diary to track the frequency and duration of the muscle contractions, any associated symptoms (like stress levels, fatigue, or dietary changes), and any potential triggers. This information can be valuable for your healthcare provider in diagnosing the issue.

In summary, while B vitamins may support nerve health, your symptoms warrant a professional evaluation to rule out any serious conditions. Early intervention can lead to better outcomes, especially if the underlying cause is neurological. Therefore, I recommend scheduling an appointment with a healthcare provider, preferably a neurologist, to discuss your symptoms in detail and receive appropriate care.

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