Pain in the muscle below the left eye when blinking

Generally, muscle pain under the left eye during blinking may be caused by factors such as eye strain, blepharitis, or conjunctivitis. Patients can receive symptomatic treatment based on the specific cause. Detailed analysis is as follows:

1. Eye Strain

Prolonged use of electronic devices such as computers and mobile phones, or extended periods of reading or driving, can lead to eye fatigue, resulting in muscle pain beneath the eyes. It is recommended to avoid excessive eye use.

2. Blepharitis

Blepharitis is usually caused by bacterial infection or skin conditions. Inflammation can irritate ocular tissues, leading to redness, swelling, peeling, and pain of the eyelids. Patients are advised to use medications such as ofloxacin eye drops or erythromycin eye ointment under a doctor's guidance, and maintain good eye hygiene.

3. Conjunctivitis

Infection of the conjunctiva by pathogenic bacteria may trigger an inflammatory response, causing eye pain along with symptoms such as redness and tearing. Patients should use medications such as chloramphenicol eye drops or ganciclovir eye drops under medical supervision, and avoid rubbing the eyes with dirty hands.

Besides the three causes above, other conditions such as trigeminal neuralgia, temporomandibular joint arthritis, or cervical spondylosis could also be responsible. Patients are advised to seek timely medical attention for proper diagnosis and treatment.