Demodex & Rosacea Research

Demodex mites have been repeatedly studied in relation to rosacea, especially papulopustular rosacea. Several studies evaluate mite density, standardized skin surface biopsy, immune activation, and the relationship between Demodex overgrowth and inflammatory facial dermatoses.

Role of Demodex mite infestation in rosacea: A systematic review and meta-analysis

Systematic Review / Meta-analysis Demodex & Rosacea Research

This review evaluated multiple case-control studies and found that Demodex prevalence and density were higher in patients with rosacea compared with controls. This is one of the stronger evidence pieces supporting a Demodex-rosacea association.

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Density of Demodex folliculorum in rosacea: a case-control study using standardized skin-surface biopsy

Case-Control Study Rosacea / Diagnosis

This classic study used standardized skin-surface biopsy and found higher Demodex density in rosacea patients, especially papulopustular rosacea. It also discusses the commonly cited threshold of more than 5 mites/cm².

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Quantification of Demodex folliculorum by PCR in rosacea and its relationship to skin innate immune activation

Molecular / Immune Study Rosacea / Innate Immunity

This study is useful for explaining the relationship between Demodex density and innate immune activation in rosacea-type skin inflammation.

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Demodex folliculorum and Rosacea: A Clinical and Histological Study

Clinical / Histological Study Rosacea

This older clinical and histologic study is useful for historical context on how Demodex has been evaluated in rosacea-like skin disease.

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