What causes twitching of the lower right eyelid?

Right lower eyelid twitching may be caused by various factors, mainly including: 1. Physiological factors: such as prolonged eye use, mental stress, fatigue, and lack of sleep, which can lead to local nerve dysfunction and subsequently cause eyelid twitching. 2. Eye fatigue: extended screen time in front of computers, mobile phones, or prolonged reading can fatigue the eyes and may also lead to eyelid twitching. 3. Eye diseases: such as conjunctivitis and blepharitis, which are inflammatory conditions of the eye that can irritate the eyes and cause eyelid twitching, possibly accompanied by symptoms like redness and a gritty sensation. 4. Neurological issues: such as facial nerve inflammation, facial nerve paralysis, and facial muscle spasms, which may also cause eyelid twitching, especially when the facial nerve is compressed or irritated. If the symptom of right lower eyelid twitching persists or is accompanied by other discomforts, timely medical consultation is recommended to determine the exact cause and receive targeted treatment.