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Related Concept Videos

Skin Diseases and Disorders01:23

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
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A sebaceous gland is a type of oil gland found almost all over the skin ( except palms and soles) and helps lubricate and waterproof the skin and hair. Most sebaceous glands are associated with hair follicles. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating the dry and dead layer of keratinized cells of the stratum corneum, keeping it pliable.
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Acne is a multifactorial skin condition primarily affecting adolescents and young adults, with a global prevalence estimated to exceed 75% in this demographic. The condition is characterized by the formation of comedones (blackheads and whiteheads), papules, pustules, nodules, and, in severe cases, cysts, particularly in areas rich in sebaceous glands such as the face, neck, chest, and back. The pathogenesis involves increased sebum production, follicular hyperkeratinization, colonization by...
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Reticular Dermis01:15

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The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
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Accessory Structures of the Skin: Hair and Hair Follicles01:16

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Related Experiment Video

Updated: Apr 20, 2026

In Vivo Confocal Microscopy: A Standard Operating Procedure for the Detection of Demodex Mites at the Eyelid Margin
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In Vivo Confocal Microscopy: A Standard Operating Procedure for the Detection of Demodex Mites at the Eyelid Margin

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Demodex mites.

Carly A Elston1, Dirk M Elston2

  • 1The Commonwealth Medical College, Scranton, Pennsylvania.

Clinics in Dermatology
|December 3, 2014
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Summary
This summary is machine-generated.

Demodex mites, commonly found in human hair follicles, are increasingly linked to skin conditions. Evidence suggests Demodex folliculorum and Demodex brevis play a role in various human skin eruptions.

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Area of Science:

  • Dermatology
  • Microbiology
  • Parasitology

Background:

  • Demodex mites are common inhabitants of human hair follicles.
  • Demodex folliculorum typically resides in facial skin follicles, while Demodex brevis is found in sebaceous glands, predominantly on the trunk.
  • While known to cause mange in animals, their role in human disease has been debated.

Purpose of the Study:

  • To review the evidence regarding the role of Demodex mites in human skin diseases.
  • To differentiate the typical locations and presentations of Demodex folliculorum and Demodex brevis in humans.

Main Methods:

  • Literature review of studies on Demodex mites and human skin conditions.
  • Analysis of mite distribution and association with specific dermatoses.

Main Results:

  • Demodex mites are frequently found on human skin.
  • Evidence supports the involvement of Demodex mites in acneiform eruptions, folliculitis, and skin issues in immunocompromised individuals.

Conclusions:

  • Demodex mites are implicated in several human skin diseases.
  • Further research is warranted to fully elucidate the pathogenic potential of Demodex mites.