Cause. Effect.

The upper eyelid of my left eye has has been twitching for a few days. I googled to find out why this started suddenly, and whether I need to worry about it. Here’s what I found:

Called myokymia in doctor lingo, these rippling muscle contractions in an eyelid can be triggered by:

  • Stress
  • Tiredness
  • Eye strain
  • Caffeine
  • Alcohol
  • Dry eyes
  • Nutritional imbalances
  • Allergies

OK, one question answered, and now I have a new one: Given the potential causes, why have my eyelids not twitched every day of my adult life?