Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Accessory Structures of the Skin: Hair Growth and Types01:20

Accessory Structures of the Skin: Hair Growth and Types

3.0K
Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
3.0K
Papillary Dermis01:11

Papillary Dermis

6.7K
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...
6.7K
Reticular Dermis01:15

Reticular Dermis

5.4K
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...
5.4K
Skin Cancer01:30

Skin Cancer

6.6K
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...
6.6K
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

6.1K
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...
6.1K
Accessory Structures of the Skin: Hair and Hair Follicles01:16

Accessory Structures of the Skin: Hair and Hair Follicles

5.5K
Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet.
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
5.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The worldwide burden of skin diseases: Lessons from the Global Burden of Disease data.

Journal of the European Academy of Dermatology and Venereology : JEADV·2026
Same author

Psoriasis in skin of color: clinical presentation, diagnostic challenges, and therapeutic considerations.

Anais brasileiros de dermatologia·2026
Same author

Low-Dose Oral Minoxidil Improves Hairline and Eyebrow Coverage in Frontal Fibrosing Alopecia: A Prospective Study.

Dermatology and therapy·2026
Same author

Species-Level Comparative Metagenomic Analysis of the Bacterial Abundance of the Gut Microbiome in Psoriasis, Hidradenitis Suppurativa, and Pemphigus Foliaceous Patients Using Shotgun Next-Generation Sequencing.

International journal of molecular sciences·2026
Same author

Psoriasis treatment training in dermatology residency: a Latin American survey of faculty and residents.

The Journal of dermatological treatment·2025
Same author

Is Cumulative Life Course Impairment Considered in Psoriasis Management? A Multinational Survey of People with Psoriasis and Healthcare Professionals.

Dermatology and therapy·2025

Related Experiment Video

Updated: Mar 25, 2026

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
06:41

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis

Published on: March 9, 2015

9.6K

Patchy Traction Alopecia Mimicking Areata.

Aline Blanco Barbosa1, Aline Donati2, Neusa S Valente3

  • 1Department of Dermatology of the University Hospital from the Federal University of Mato Grosso do Sul, Campo Grande (MS), Brazil.

International Journal of Trichology
|February 24, 2016
PubMed
Summary
This summary is machine-generated.

Traction alopecia from medical devices like video-EEG electrodes can mimic alopecia areata. Prompt diagnosis prevents unnecessary treatments for this hair loss condition.

Keywords:
Alopeciadesmoscopypathology

More Related Videos

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
03:22

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia

Published on: January 27, 2018

15.8K
Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration
10:09

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Published on: February 28, 2013

14.3K

Related Experiment Videos

Last Updated: Mar 25, 2026

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
06:41

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis

Published on: March 9, 2015

9.6K
Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
03:22

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia

Published on: January 27, 2018

15.8K
Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration
10:09

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Published on: February 28, 2013

14.3K

Area of Science:

  • Dermatology
  • Trichology
  • Medical Device Complications

Background:

  • Traction alopecia is often overlooked when the causative external factor is not apparent.
  • Accurate diagnosis is crucial to prevent misdiagnosis and inappropriate treatments.

Observation:

  • Two female patients presented with non-scarring patchy alopecia.
  • The alopecia was attributed to traction from video-electroencephalogram (vEEG) electrodes.
  • Alopecia areata was initially suspected in both cases.

Findings:

  • The hair loss was confirmed as acute traction alopecia, not alopecia areata.
  • Potential contribution of diffuse hair disorders was noted.

Implications:

  • Highlights the diagnostic challenge of traction alopecia in clinical practice.
  • Emphasizes the importance of considering medical devices as a cause of hair loss.
  • Underscores the need for correct diagnosis to guide appropriate patient management and avoid ineffective therapies.