The eyelids exist to protect sensitive eye tissues from debris and injury. Eyelashes also play a role in the protective process, but they can also cause twitching, in some instances. The eyelash follicles contain oil glands that may become irritated or clogged, causing several possible conditions. Among these is blepharitis or eyelid inflammation. In addition to symptoms such as itchy or swollen eyelids, the muscles near the eyelid may begin to spasm.

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