What causes dacryocystitis?

Updated: Jul 31, 2018
  • Author: Bobak Zonnoor , MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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Dacryocystitis is caused by inflammation of the lacrimal sac; this usually occurs in the setting of obstruction of the lacrimal apparatus. The obstruction may be congenital or secondary to infection, tumor, or trauma. [7]

Infectious causes include gram-positive isolates (Staphylococcus and Streptococcus species), in 71-78% of cases, and gram-negative isolates, in 22-29% of cases. [35, 36] Rarely, dacryocystitis may result from mucormycosis. [37]

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