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Demodex mite blepharitis; Look for the mite you might have
Pooja Naharia1, Pradeep Kumar2, Puneet Bhatt3
1Department of Microbiology, Army Hospital Research and Referral, Delhi, India.
Indian Journal of Medical Microbiology
|April 24, 2025
Summary
Demodex mite infestation is a common cause of blepharitis, leading to itchy eyelids. Microscopic examination of eyelashes is crucial for diagnosing this underreported parasitic cause of ocular disease.
Area of Science:
- Ophthalmology
- Parasitology
- Medical Entomology
Background:
- Blepharitis is a prevalent ocular condition causing eyelid inflammation and discomfort.
- Demodex mite infestation is an often overlooked etiology of blepharitis, particularly in urban populations.
Purpose of the Study:
- To determine the prevalence of Demodex mite infestation in patients presenting with blepharitis.
- To highlight the diagnostic significance of Demodex mites in blepharitis cases.
Main Methods:
- Light microscopy was employed for the examination of epilated eyelashes.
- Patients with clinical signs of blepharitis, including collarettes, were included in the study.
Main Results:
- Demodex mites were identified in 20 individuals diagnosed with blepharitis.
- The presence of collarettes on eyelashes was associated with Demodex infestation.
Conclusions:
- Microscopic examination of eyelashes is essential for accurate and timely diagnosis of Demodex-associated blepharitis.
- Demodex infestation represents a significant, yet underdiagnosed, contributor to blepharitis.
