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Demodicosis Imitating Acne Vulgaris: A Case Report
1School of Anti-Aging and Regenerative Medicine, Mae Fah Luang University, Bangkok, 10110, Thailand.
Clinical, Cosmetic and Investigational Dermatology
|March 28, 2022
Summary
Demodicosis, a mite infestation, can mimic acne and be misdiagnosed. This case shows a patient whose Demodex mite condition shifted types and responded well to ivermectin treatment.
Area of Science:
- Dermatology
- Parasitology
Background:
- Demodicosis, caused by Demodex mites, presents with diverse clinical forms, often leading to misdiagnosis.
- Common presentations include pityriasis folliculorum, rosacea-like, folliculitis-like, and perioral dermatitis-like types.
Observation:
- A 19-year-old woman with a history of pityriasis folliculorum type demodicosis developed a facial rash with papules and pustules after a year of remission.
- Initial misdiagnosis as acne vulgaris and treatment with doxycycline were ineffective.
Findings:
- Reassessment revealed multiple Demex mites, leading to a diagnosis of folliculitis-like demodicosis.
- The patient responded well to oral ivermectin and metronidazole gel, with symptom resolution within 4 weeks.
Implications:
- This case highlights Demodicosis's potential to mimic acne vulgaris.
- It is the first reported instance of a clinical type change in Demodicosis, from pityriasis folliculorum to folliculitis-like type.
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