Disease or Syndrome
blepharospasm Audio
bleph·a·ro·spasm [ blef-er-uh-spaz-uhm ]
Subclass of:
Eyelid Diseases
Etymology:
Greek blepharon = eyelid + spasmos = contraction
Other terms based on blepharon will be met in ophthalmology.
Definitions related to blepharospasm:
  • A focal dystonia that affects the muscles of the eyelids and brow, associated with involuntary recurrent spasm of both eyelids.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Excessive winking; tonic or clonic spasm of the orbicularis oculi muscle.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Involuntary twitching of the eyelid and/or eyebrow.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Blepharospasm is spasm of muscles around the eye causing involuntary blinking and eye closing. The cause of blepharospasm is most often unknown. It affects women more than men and tends to occur in families. Rarely, blepharospasm may be secondary to eye disorders, including those that cause ocular irritation (eg, trichiasis, an inward...
    Merck Manuals
    Merck & Co., Inc., 2025
  • Blepharospasm is spasm of muscles around the eye causing involuntary blinking and eye closing.
    Merck Manuals
    Merck & Co., Inc., 2025
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.