Pityriasis Folliculorum (Demodex)

Ayres, Samuel

doi:10.1001/archderm.1930.01440070027002

Cited by 69 publications

(61 citation statements)

References 5 publications

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“…The case reports and photographs in the publications of Ayres [1930], Ayres and Ayres [1961] and Ayres and Anderson [1932] show a remarkable similarity to the clinical picture of perioral dermatitis, which was described in detail by Frumess and Lewis in 1957 as light-sensitive seborrhoeid. Marks and Black [1971] examined 26 biopsies from patients with peri oral dermatitis and came to the conclusion that D.folliculorum does not play an aetio-pathogenetic role.…”

Section: Perioral Dermatitissupporting

confidence: 64%

The Hair Follicle Mites Demodex folliculorum and Demodex brevis: Biology and Medical Importance

Rufli

Mumcuoglu²

1981

Dermatology

183

138

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Section: Perioral Dermatitissupporting

confidence: 64%

The Hair Follicle Mites Demodex folliculorum and Demodex brevis: Biology and Medical Importance

Rufli

Mumcuoglu²

1981

Dermatology

183

138

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“…Demodex infestation can cause indistinguishable multiple skin disorders with white follicular scales, papules, and pustules as their frequent clinical picture (Ayres, 1930;Ayres and Ayres, 1961;Seifert, 1978). Yet it is still under debate whether Demodex is the cause of many kinds of skin diseases (Bonnar et al, 1993;Forton and Seys, 1993;Forton et al, 2005;Hsu et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Facial dermatosis associated with Demodex: a case-control study

Zhao

Yan

Wang

et al. 2011

J. Zhejiang Univ. Sci. B

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Abstract:Demodex has been considered to be related with multiple skin disorders, but controversy persists. In this case-control study, a survey was conducted with 860 dermatosis patients aged 12 to 84 years in Xi'an, China to identify the association between facial dermatosis and Demodex. Amongst the patients, 539 suffered from facial dermatosis and 321 suffered from non-facial dermatosis. Demodex mites were sampled and examined using the skin pressurization method. Multivariate regression analysis was applied to analyze the association between facial dermatosis and Demodex infestation, and to identify the risk factors of Demodex infestation. The results showed that total detection rate of Demodex was 43.0%. Patients aged above 30 years had higher odds of Demodex infestation than those under 30 years. Compared to patients with neutral skin, patients with mixed, oily, or dry skin were more likely to be infested with Demodex (odds ratios (ORs) were 2.5, 2.4, and 1.6, respectively). Moreover, Demodex infestation was found to be statistically associated with rosacea (OR=8.1), steroid-induced dermatitis (OR=2.7), seborrheic dermatitis (OR=2.2), and primary irritation dermatitis (OR=2.1). In particular, ORs calculated from the severe infestation (≥5 mites/cm 2 ) rate were significantly higher than those of the total rate. Therefore, we concluded that Demodex is associated with rosacea, steroid-induced dermatitis, seborrheic dermatitis, and primary irritation dermatitis. The rate of severe infestation is found to be more correlated with various dermatosis than the total infestation rate. The risk factors of Demodex infestation, age, and skin types were identified. Our study also suggested that good hygiene practice might reduce the chances of demodicosis and Demodex infestation.

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“…Though the pathogenicity of Demodex mites is still debatable, more and more case-control studies showed that the multiplication of the mites is usually considered as a cause of multiple skin disorders. They have been reported to be involved in pityriasis folliculorum (Ayres, 1930), rosacea (Ayres and Ayres, 1961;Bonnar et al, 1993;Forton and Seys, 1993), pustular folliculitis (Dong and Duncan, 2006), papulopustular scalp eruptions (Purcell et al, 1986), perioral dermatitis (Hsu et al, 2009), and blepharitis (Post and Juhlin, 1963;Divani et al, 2009;Zhao et al, 2012). It is also suspected that Demodex infestation may be one of the triggering factors of carcinogenesis in eyelid basal cell carcinomas (Erbagci et al, 2003) and sebaceous adenoma (Dhingra et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

A meta-analysis of association between acne vulgaris and Demodex infestation

Zhao

et al. 2012

J. Zhejiang Univ. Sci. B

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Until now, etiology of acne vulgaris is still uncertain. Although clinicians usually deny the association between Demodex infestation and acne vulgaris, it has been proved in some clinical practices. To confirm the association between Demodex infestation and acne vulgaris, a meta-analysis was conducted. Predefined selection criteria were applied to search all published papers that analyzed the association between Demodex infestation and acne vulgaris (January 1950 to August 2011) in ISI Web of Knowledge, MEDLINE, and China National Knowledge Infrastructure (CNKI) databases. A meta-analysis was performed to calculate odds ratios (ORs) and 95% confidence intervals (CIs) based on fixed effects models or random effects models. We enrolled the 60 Chinese and 3 English papers in this meta-analysis, which covered Turkey and 25 different provinces/municipalities in China and 42 130 participants including students and residents, aged from 1 to 78 years. The pooled OR in random effects models is 2.80 (95% CI, 2.34-3.36). Stability is robust according to sensitivity analysis. The fail-safe number is 18 477, suggesting that at least 18 477 articles with negative conclusions would be needed to reverse the conclusion that acne vulgaris was related to Demodex infestation. So the effect of publication bias was insignificant and could be ignored. It was concluded that acne vulgaris is associated with Demodex infestation. This indicates that when regular treatments for acne vulgaris are ineffective, examination of Demodex mites and necessary acaricidal therapies should be considered.

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Pityriasis Folliculorum (Demodex)

Cited by 69 publications

References 5 publications

The Hair Follicle Mites <i>Demodex folliculorum</i> and <i>Demodex brevis</i>: Biology and Medical Importance

The Hair Follicle Mites <i>Demodex folliculorum</i> and <i>Demodex brevis</i>: Biology and Medical Importance

Facial dermatosis associated with Demodex: a case-control study

A meta-analysis of association between acne vulgaris and Demodex infestation

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