Last reviewed on RxList 4/24/2015. Norco (hydrocodone bitartrate and acetaminophen) is an opioid analgesic and antitussive (cough suppressant) combined with acetaminophen and used to treat moderate to fairly severe pain. All strengths of Norco are available as a generic combined with acetaminophen.
Article Sections. Eyelid problems range from benign, self-resolving processes to malignant, possibly metastatic, tumors. Inflammation, infection, benign and malignant tumors, and structural problems such as ectropion, entropion and blepharoptosis may occur. Fortunately, most eyelid disorders are not vision-threatening or life-threatening; however, many cause irritative symptoms such as burning, foreign-body sensation or pain.
Other conditions that sometimes include eyelid twitching as a sign include: 1  Blepharitis. 2  Corneal abrasion. 3  Dry eyes (decreased production of tears) 4  Entropion. Glaucoma.  Light 1  sensitivity. Trichiasis.  Uveitis.