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Clinical Presentation
- Fine, isolated rhythmic twitching of the upper/lower eyelid
- Mostly unilateral and on the lower lid
- Periodic, lasting seconds to hours (sometimes chronic)
Causes
- Stress
- Lack of sleep
- Caffeine
- Dry eye
- Vitamin B deficiency, magnesium deficiency
- Alcohol, nicotine
- Thyroid disease
- Rarely medication-related (e.g., topiramate, clozapine, flunarizine)
Examination
- Detailed medical history
- Slit lamp examination (sometimes difficult to see)
- Pulling on the affected lid often improves twitching
- Tapping on the affected area can sometimes reveal twitching
- Imaging usually not necessary
Treatment
- Usually self-limiting, good prognosis
- Avoid triggers (see Causes)
- Treat dry eye
- Alternatively, for chronic forms (>3 months), botulinum toxin injections (5-20 units)
- Other treatment options (not evidence-based) include: tonic water, calcium, folic acid, phosphate, potassium, multivitamin supplements
Differential Diagnoses
- Hemifacial spasm
- Essential blepharospasm
- Meige syndrome
Red Flags
- No improvement within a few weeks
- Twitching in other facial areas
- Difficulty opening the eye
- Complete eyelid closure with each fasciculation
- Redness/swelling
- Ptosis of the upper eyelid
Sources
- The Wills Eye Manual: Office and Emergency Room Diagnosis and Treatment of Eye Disease; Kalla Gervasio MD, Travis Peck MD et al; Lippincott Williams&Wilkins; 8th Edition (2021)
- Jafer Chardoub AA, Patel BC. Eyelid Myokymia. [Updated 2021 Nov 2]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK560595/