The hemifacial spasm is a neuromuscular disorder that generates involuntary and repetitive movements on one side of the face. This condition can present suddenly and increase in intensity over time, affecting not only the quality of life but also the self-esteem and social activities of those who suffer from it. Although it is more common in adults over 40 years old, it can manifest in younger individuals depending on the underlying cause.
A common medical inquiry in Costa Rica is: “Why does half of my face twitch?” This symptom, besides being annoying, often generates concern. In many cases, it is precisely a hemifacial spasm, whose most common cause is the compression of the facial nerve by a blood vessel. This situation can be accurately diagnosed through advanced imaging studies and effective surgical solutions are available in the country.
How Does Hemifacial Spasm Manifest?
Hemifacial spasm originates from a dysfunction in the facial nerve (cranial nerve VII), which controls the muscles of facial expression. When this nerve is irritated or compressed, usually by an artery that touches it, involuntary hyperactivity of the facial muscles on one side occurs.
The most common symptoms include:
- Intermittent muscle contractions, mainly around the eye (blepharospasm) and subsequently in the cheek, mouth, and neck.
- Sensation of facial pulling or involuntary eye closure.
- Increased frequency or intensity of spasms with stress or fatigue.
- Difficulty keeping the eye open during prolonged episodes.
Unlike other movement disorders, hemifacial spasm can persist during sleep in some patients, which can help differentiate it clinically.
Diagnosis and Recommended Imaging Studies
Confirming the cause of hemifacial spasm requires a complete neurological evaluation. A detailed physical examination allows for the identification of whether the disorder is peripheral or central. However, the definitive diagnosis relies on imaging studies, with magnetic resonance imaging (MRI) being the primary resource.
High-resolution MRI allows for clear observation of the anatomical relationship between the facial nerve and the cerebral arteries. In Costa Rica, specialized neurosurgery centers offer this type of study with advanced technology, allowing for the identification of whether there is neurovascular compression, which is the most common treatable cause.
Additionally, in certain cases, angiography can be used to obtain three-dimensional images of the vessels surrounding the brainstem, which is key for planning precise and safe surgical treatment.
Treatments Available in Costa Rica: From Temporary to Definitive
The management of hemifacial spasm can be divided into symptomatic treatments and surgical treatments. The choice will depend on the severity of the condition, the impact on daily life, and the identified cause.
Symptomatic Treatments:
- Botulinum toxin: This is the most commonly used option in the short term. It is applied directly to the affected muscles to temporarily block contraction. Although it is usually effective, its effect is transient (3-6 months) and requires periodic applications.
- Anticonvulsant medications: In some cases, these are prescribed to reduce nerve activity, although their effectiveness is variable.
Surgical Treatment: Microvascular Decompression
For patients seeking a more lasting solution, microvascular decompression (MVD) surgery is currently the most effective treatment. This procedure involves separating the blood vessel that compresses the facial nerve using a small surgical pad. It is performed through a minimal incision behind the ear and under microscopic visualization.
In Costa Rica, this type of surgery is available at high-specialty neurosurgery centers. The success rate exceeds 85% in well-selected cases, with significant improvements from the first days post-surgery. Although, as with any neurosurgical intervention, there are risks, proper evaluation by a specialist reduces complications.
Benefits of MVD surgery:
- Definitive solution in most cases
- Progressive elimination of spasms
- Aesthetic and functional improvement of the face
- Reduction of psychological and social impact
For those looking for how to eliminate hemifacial spasm, this surgical option represents a highly effective alternative available within the country with international standards.
Regain Control of Your Face with a Precise Diagnosis
Hemifacial spasm is a condition that can cause significant discomfort, but it has effective treatment options when its origin is identified. If you notice that your face twitches or contracts involuntarily, especially if you are asking yourself “why does half of my face twitch,” it is important to seek a specialized medical evaluation.
Thanks to access to advanced magnetic resonance imaging and the expertise of neurosurgeons in procedures such as microvascular decompression, those suffering from hemifacial spasm in Costa Rica have safe alternatives to regain their well-being. It is not necessary to resign oneself to living with this condition; a precise diagnosis and appropriate treatment can make a significant difference in your quality of life.
As a neurosurgeon, I invite you not to postpone your well-being any longer. If you are experiencing symptoms, schedule a consultation with me. We will evaluate your case with medical rigor and I will personally guide you on the most appropriate treatment. The first step to regaining peace of mind is a specialized evaluation. I am here to help you.
