What Is Adult Blepharospasm?

What is Blepharospasm?

Blepharo Spasm

Greek word
for “eyelid”


2 Types of Blepharospasm

  • Primary blepharospasm: no cause can be found through examination or diagnostic testing1
  • Secondary blepharospasm: a cause is identified, which could include1:
    • Exposure to a drug known to cause the condition
    • Another disorder of which blepharospasm is a symptom

Muscles Involved in Blepharospasm

Muscles involved in Blepharospasm


  • Excessive blinking
  • Light sensitivity
  • Watering eyes
  • Dry eyes
  • Eye irritation


  1. Tsui JKC. Blepharospasm and hemifacial spasm. In: Brin MF, Comella CL, Jankovic J, eds. Dystonia: Etiology, Clinical Features, and Treatment. Philadelphia, PA: Lippincott Williams & Wilkins; 2004:151-157.