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Related Concept Videos

Papillary Dermis01:11

Papillary Dermis

Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Skin Diseases and Disorders01:23

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...
Reticular Dermis01:15

Reticular Dermis

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.
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...
Acne Infection01:27

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...
Hypersensitivity Reactions: Delayed Hypersensitivity Reactions01:29

Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...
The Skin Microbiota01:27

The Skin Microbiota

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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<i>Letter:</i> Consider a Low-Metal Diet in Metal-Allergic Dyshidrotic Eczema Patients Prior to Advanced Systemic Therapy.

Dermatitis : contact, atopic, occupational, drug·2025
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Is Food-Triggered Atopic Dermatitis a Form of Systemic Contact Dermatitis?

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Stasis Dermatitis: An Overview of Its Clinical Presentation, Pathogenesis, and Management.

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Association of Food Insecurity With Atopic Dermatitis: A Cross-sectional Analysis of a National Sample of Pediatric Patients.

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Related Experiment Video

Updated: Jun 8, 2026

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach
09:32

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach

Published on: September 26, 2019

"Dermatitis" defined.

Suzanne M Smith1, Susan T Nedorost

  • 1University Hospitals Case Medical Center UHMC Department of Dermatology, Cleveland, OH, USA.

Dermatitis : Contact, Atopic, Occupational, Drug
|October 6, 2010
PubMed
Summary
This summary is machine-generated.

Dermatologists lack consensus on defining dermatitis and eczema. This ambiguity hinders understanding and potentially impacts patient care for these common skin conditions.

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Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
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Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Related Experiment Videos

Last Updated: Jun 8, 2026

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach
09:32

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach

Published on: September 26, 2019

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
10:27

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

Published on: December 15, 2011

Area of Science:

  • Dermatology
  • Clinical Definitions
  • Medical Terminology

Background:

  • Dermatitis definitions vary (narrow/broad, clinical/histological).
  • It is a common, costly skin condition, yet underresourced.
  • Lack of a shared definition for dermatitis and its subcategories is a significant barrier.

Purpose of the Study:

  • To investigate dermatologists' definitions of "dermatitis."
  • To determine consensus on the definitions of dermatitis and related terms.

Main Methods:

  • Nationwide survey of dermatologists.
  • Seven-question survey instrument.

Main Results:

  • Half of dermatologists define dermatitis as any skin inflammation.
  • Nearly half use "dermatitis" interchangeably with "eczema."
  • Subcategory endorsement differs between "dermatitis" and "eczema," with "atopic" highly endorsed for both, while "contact," "drug hypersensitivity," and "occupational" favor "dermatitis."

Conclusions:

  • Experts lack consensus on defining dermatitis and eczema.
  • Ambiguity in terminology may impede consistent clinical practice and research.