Unilateral periocular spasm

Area of Science:

• Neurology
• Neurosurgery

Background:

• Hemifacial spasm is characterized by involuntary, persistent contractions on one side of the face.
• The primary cause is typically neurovascular compression of the facial nerve at the brainstem.

Purpose of the Study:

• To summarize the diagnostic approaches and treatment options for hemifacial spasm.
• To compare the efficacy and outcomes of botulinum toxin therapy and microvascular decompression.

Main Methods:

• Diagnosis relies on clinical history, physical examination, electromyography (EMG), and magnetic resonance imaging (MRI).
• Treatment strategies include pharmacotherapy with botulinum toxin and surgical intervention via microvascular decompression.

Main Results:

• Botulinum toxin therapy demonstrates high effectiveness (85-95% success) for symptomatic relief with few adverse effects.
• Surgical microvascular decompression offers a high average success rate (85%) by addressing the underlying cause.

Conclusions:

• Both botulinum toxin and microvascular decompression are effective treatments for hemifacial spasm.
• The choice of treatment depends on patient factors and treatment goals, balancing symptomatic relief with addressing the underlying pathology.