What eye twitching is
Mayo Clinic describes eye twitching as a movement or spasm of the eyelid or eye muscles that cannot be controlled. MedlinePlus explains that the eyelid may repeatedly close or nearly close and reopen. There are different types, each with different causes.
The most common type is myokymia. Mayo Clinic explains that it happens to most people at some point, can involve the upper or lower eyelid, usually affects only one eye at a time and ranges from barely noticeable to irritating.
Common triggers: sleep, caffeine, stress, screens
Mayo Clinic and MedlinePlus list common triggers of myokymia:
- tiredness and lack of sleep
- stress
- too much caffeine
- alcohol and nicotine
- eye strain, for example from long periods of close work or screen use
- bright light, wind or air pollution
MedlinePlus notes that, rarely, eyelid twitching can be a side effect of a medicine used for migraine, and Mayo Clinic mentions medicines used for Parkinson’s disease. Do not stop a medicine on your own; discuss it with the prescriber.
Dry or irritated eyes
MedlinePlus explains that twitching can be caused by irritation of the surface of the eye (cornea) or of the membranes lining the eyelids (conjunctiva). Mayo Clinic lists dry eyes, inflammation of the eyelid margins (blepharitis) and light sensitivity among conditions that sometimes include eyelid twitching.
MedlinePlus adds that light sensitivity and occasionally blurred vision may accompany twitching, and that light sensitivity is sometimes the cause. If your eyes feel dry, gritty or irritated, treating the irritation may help the twitch settle.
Simple remedies
Both sources explain that eye twitching usually goes away without treatment. In the meantime, they suggest:
- getting more sleep and rest
- reducing caffeine
- drinking less alcohol
- finding ways to relieve stress
- using lubricating eye drops
Twitching is not diagnosed as a vitamin or mineral deficiency by itself, and neither source recommends supplements for it. If twitching persists, a professional assessment is more useful than trying supplements.
How long it usually lasts
MedlinePlus explains that once spasms begin, they may continue on and off for a few days and then disappear, and that in most cases they stop within a week. Mayo Clinic says that twitching usually goes away within a short time but can recur over hours, days or longer, and that it usually settles within a few days or weeks with rest, stress relief and less caffeine.
Most people do not even notice when the twitch has stopped. Twitching that keeps returning or lasts longer than expected should be discussed with a doctor.
Twitching vs blepharospasm vs hemifacial spasm
Mayo Clinic describes two less common conditions that are different from ordinary myokymia:
- Benign essential blepharospasm: a type of dystonia affecting the muscles around the eyes. It starts with increased blinking of both eyes and may lead to the eyelids being squeezed shut. It is uncommon but can be severe and affect all aspects of life.
- Hemifacial spasm: twitching of the muscles on one side of the face, including the eyelid, which may start around the eye and spread to the cheek and mouth. It is typically caused by a blood vessel pressing on the facial nerve.
MedlinePlus notes that blepharospasm lasts much longer than common twitching and may close the eyelids completely. These conditions are diagnosed by a doctor and treated differently; most eyelid twitching is simply myokymia.
When to see a doctor
Mayo Clinic and MedlinePlus advise seeing a primary care professional or an eye specialist if:
- twitching does not go away within about a week (MedlinePlus) or a few weeks (Mayo Clinic)
- the eyelid closes completely with each twitch, or you have difficulty opening the eye
- twitching involves other parts of the face or body
- the affected area feels weak or stiff
- the eye is red or swollen or has a discharge
- the upper eyelid is drooping
Warning signs that need prompt care
Mayo Clinic explains that, very rarely, eye twitching can be a sign of a brain or nervous system disorder, such as Bell’s palsy, dystonia, multiple sclerosis, Parkinson’s disease or Tourette syndrome, but that in these cases it is almost always accompanied by other signs and symptoms. Twitching alone does not mean any of these conditions.
MedlinePlus notes that, rarely, there may be some loss of vision if twitching is due to an undetected eye injury. A painful red eye, a change in vision, a new drooping eyelid or sudden weakness of one side of the face should not wait for the usual week: seek prompt care.
Where the sources differ
Mayo Clinic (January 2025) and MedlinePlus (July 2024) agree on the common triggers and on simple remedies. They differ on timing: MedlinePlus advises an appointment if twitching does not go away within 1 week, while Mayo Clinic says within a few weeks. Waiting is never required when there are warning signs. Mayo Clinic notes that myokymia usually affects one eye at a time, whereas blepharospasm involves both eyes; MedlinePlus mentions the upper eyelid as most often affected.
For severe or long-lasting spasms, such as blepharospasm, MedlinePlus explains that botulinum toxin injections can control the spasms and that, in rare severe cases, surgery may help. These treatments are not needed for ordinary twitching. MediBilbao Salud does not treat eyelid disorders; an eye specialist or neurologist is the right professional.
In summary
Eye twitching is usually myokymia, a harmless flicker of one eyelid triggered by tiredness, stress, caffeine, alcohol, eye strain or irritation. It generally stops within days to a few weeks. More sleep, less caffeine and alcohol, stress relief and lubricating drops may help. See a doctor if it persists, closes the eye, spreads to the face, or comes with a red eye or drooping eyelid.
A short twitch diary helps at the appointment: which eyelid and side, whether the eye closes completely, whether the twitch spreads to the cheek or mouth, how long each episode lasts and possible triggers such as sleep, caffeine or screen time.
Frequently asked questions about eye twitching
These answers are general information and do not replace an examination or individual medical advice.
What causes eye twitching?
Most often tiredness, stress, caffeine, alcohol, nicotine, eye strain, bright light or irritation of the eye surface. Rarely, medicines or nervous system conditions are involved.
What does it mean if only one eye twitches?
Common eyelid twitching (myokymia) usually affects one eye at a time and is harmless. Twitching that spreads to one side of the face may be hemifacial spasm and should be checked.
What deficiency causes eye twitching?
Neither source links eye twitching to a specific deficiency. Common triggers are tiredness, stress and caffeine; taking supplements without an assessment is not recommended.
How do I stop my eye twitching?
Get more sleep, reduce caffeine and alcohol, relieve stress and use lubricating eye drops if your eyes are dry. Most twitches stop on their own.
How long can eye twitching last?
Usually a few days; most cases stop within a week, although some last a few weeks or come back.
When should I see a doctor?
If it lasts more than a week or a few weeks, closes the eyelid, spreads to other parts of the face, or comes with a red, swollen eye, discharge or a drooping eyelid.
Sources
This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.