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Acne Infection

Acne Infection

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...

Accessory Structures of the Skin: Sebaceous Glands

Accessory Structures of the Skin: Sebaceous Glands

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.
These glands that produce the oils on the skin and hair are holocrine glands. The mature...

Folliculogenesis

Folliculogenesis

Folliculogenesis is the development of ovarian follicles, the specialized structures within the ovarian cortex where oogenesis, or egg development, occurs. This process is essential for female reproductive health and begins during fetal development when primordial follicles are formed. Each primordial follicle comprises a primary oocyte in the center, surrounded by a single layer of squamous pre-granulosa cells. These follicles remain dormant in late prophase I of meiosis until triggered by...

Skin Cancer

Skin Cancer

Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...

Skin Diseases and Disorders

Skin Diseases and Disorders

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.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...

Smallpox

Smallpox

Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.

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Related Experiment Video

Updated: Jun 17, 2026

A Rat Model of Compound Acne

A Rat Model of Compound Acne

Published on: November 1, 2024

[How acne vulgaris develops].

¹Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität München, Frauenlobstr. 9-11, 80337 München. Gerd.Plewig@med.uni-muenchen.de

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete

|January 20, 2010

Summary

This summary is machine-generated.

Acne development involves multiple factors, including genetic predisposition and external influences like diet. Understanding these triggers is key to managing this common skin condition.

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Area of Science:

Dermatology
Pathogenesis of skin conditions

Context:

Acne vulgaris is a common human skin disease affecting pilosebaceous units.
The pathogenesis involves a complex interplay of genetic, hormonal, microbial, and environmental factors.

Purpose:

To elucidate the multifactorial pathogenesis of acne.
To detail the key steps in acne morphogenesis, from hyperkeratosis to inflammation.

Summary:

Acne initiation requires hyperkeratosis in the infundibulum, leading to microcomedones and then comedones.
Androgen stimulation promotes sebaceous lipogenesis, facilitating Propionibacteria colonization.
Inflammatory phenomena and potential scarring occur at various stages, influenced by genetic and immunological factors.
Exogenous factors, including diet (high glycemic load foods, dairy), play a significant role.

Impact:

Provides a comprehensive overview of acne pathogenesis for researchers and clinicians.
Highlights the importance of both endogenous and exogenous factors in acne development.
Informs potential therapeutic strategies by identifying key pathways and contributing factors.