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In Vivo Confocal Microscopy: A Standard Operating Procedure for the Detection of Demodex Mites at the Eyelid Margin
Published on: July 3, 2025
[Rosacea-like demodicidosis and chronic blepharitis].
1Laboratoire de parasitologie, faculté de médecine de Tunis, 15 rue Djebel Lakhdhar, Tunis, Tunisia. anane.sonia@planet.tn
Demodicidosis, a skin disease caused by Demodex mites, can mimic rosacea. Early diagnosis and treatment with metronidazole and mercury ointment led to complete remission in a patient with rosacea-like demodicidosis.
Area of Science:
- Dermatology
- Parasitology
- Microbiology
Background:
- Demodicidosis is a parasitic skin disease caused by Demodex mites.
- It can present with various clinical manifestations, sometimes resembling other dermatological conditions like rosacea.
Observation:
- A 37-year-old woman presented with chronic blepharitis and facial papulovesicles.
- Physical examination revealed blepharitis and facial lesions without telangiectasia or flushing.
- Numerous Demodex folliculorum were identified in eyelashes and skin scrapings.
Findings:
- The patient was diagnosed with rosacea-like demodicidosis and Demodex blepharitis.
- Treatment with topical and oral metronidazole for two months and yellow mercury ointment for 15 days resulted in complete remission.
- No recurrence was observed after treatment.
Implications:
- Screening for Demodex mites is crucial for accurate diagnosis of demodicidosis.
- Prompt and appropriate treatment can lead to full recovery and prevent recurrence.
- Understanding Demodex mite's role in skin conditions aids in differential diagnosis and management.
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