What is Demodex blepharitis (DB)?

Demodex blepharitis—known also as DB—is an eyelid disease caused by an infestation of Demodex mites, a common mite found on humans.1,2

three illustrated demodex mites outlined with red three illustrated demodex mites in red
  • It’s estimated that approximately 25 million eye care patients suffer from Demodex blepharitis, and most don’t know they have it3,4
  • Common signs of Demodex blepharitis include redness, inflammation, and itching along the eyelid base1,2
  • Crusty flake buildup on eyelashes (collarettes) is a tell-tale sign of Demodex blepharitis1,3
  • Demodex blepharitis may be commonly misdiagnosed since other eye diseases share similar symptoms1,3
three illustrated demodex mites outlined with red three illustrated demodex mites in red

Take the Demodex blepharitis (DB) quiz

Answer a few simple questions about your current eye health to find out what next steps and additional information about Demodex blepharitis (DB) would be helpful for you.

TAKE THE QUIZ

1. Fromstein SR, Harthan JS, Patel J, Opitz DL. Demodex blepharitis: clinical perspectives. Clin Optom (Auckl). 2018;10:57–63.
2. Rhee MK, Yeu E, Barnett M, et al. Demodex blepharitis: a comprehensive review of the disease, current management, and emerging therapies. Eye Contact Lens. 2023;49(8):311-318.
3. Trattler W, Karpecki P, Rapoport Y, et al. The prevalence of Demodex blepharitis in US eye care clinic patients as determined by collarettes: a pathognomonic sign. Clin Ophthalmol. 2022;16:1153–1164.
4. O’Dell L, Dierker DS, Devries DK, et al. Psychosocial impact of Demodex blepharitis. Clin Ophthalmol. 2022;16:2979-2987.

Return to top

FIND AN EYE DOCTOR