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What Causes Eyelid Twitching?

Sep 05, 2021 Source: Cainiu Health
Dr. Cui Xin
Introduction
1. Nervous system dysfunction: Due to autonomic nervous system dysfunction, the orbicularis oculi muscle fibers of the eyelid are affected, leading to sudden, recurrent twitching or spasms. 2. Psychological factors: Most cases of eyelid spasm are triggered by psychological factors, such as excessive mental stress, anxiety, or fatigue. 3. Ocular inflammation: Conditions such as keratitis, trachoma, or conjunctivitis.

Eyelid twitching—also known as blepharospasm—is most commonly caused by eye strain and insufficient sleep. Prolonged visual fatigue increases the neural tone and tension in the nerves and muscles that control eye movement, thereby triggering involuntary muscle contractions or twitching. So, what exactly causes eyelid twitching? Below, we address this question.

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What Causes Eyelid Twitching?

1. Nervous System Dysfunction

Autonomic nervous system dysfunction can affect the orbicularis oculi muscle fibers, resulting in sudden, recurrent tremors or spasms. Additionally, underlying ocular conditions must be ruled out—including trichiasis (in-turned eyelashes), conjunctival concretions (calcified deposits), or localized inflammatory irritation—all of which may provoke eyelid spasm. In severe cases, botulinum toxin (Botox) injections may be recommended, with relatively clear therapeutic efficacy; however, effects are temporary, often requiring repeated injections.

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2. Psychological Factors

Most cases of blepharospasm stem from psychological factors such as excessive mental stress, anxiety, or physical fatigue. Episodes are typically brief and often resolve spontaneously. Initial management focuses on improving psychological well-being—reducing stress, regulating mood, and maintaining healthy lifestyle habits. Oral supplementation with B-complex vitamins (e.g., vitamin B1) may also be beneficial. If blepharospasm significantly impairs daily functioning or work performance, minimally invasive surgical intervention may be considered.

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3. Ocular Inflammation

Conditions such as keratitis, trachoma, or conjunctivitis—often triggered by viral infections including herpes simplex or varicella-zoster virus—can cause frequent eyelid twitching. These are frequently accompanied by symptoms such as foreign-body sensation, conjunctival redness, and eyelid spasm. Generally, rest and performing eye exercises (e.g., eye health exercises) can alleviate frequent twitching. When eyelid twitching occurs, gentle local massage around the eyes is recommended to enhance regional blood circulation and relieve symptoms.

The above outlines the primary causes of eyelid twitching. We hope this information is helpful to you.

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