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

Glaucoma: Overview01:25

Glaucoma: Overview

623
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
623
Accessory Structures of the Skin: Hair Growth and Types01:20

Accessory Structures of the Skin: Hair Growth and Types

1.5K
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...
1.5K
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

481
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
481
Accessory Structures of the Skin: Hair and Hair Follicles01:16

Accessory Structures of the Skin: Hair and Hair Follicles

2.4K
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...
2.4K
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

3.9K
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...
3.9K
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

574
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
574

You might also read

Related Articles

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

Sort by
Same author

The Value of Trichoscopy and Histopathology in the Diagnosis of Post-COVID-19 Telogen Effluvium.

Skin appendage disorders·2026
Same author

Occipital short anagen syndrome: Epidemiological, clinical and trichoscopy features of a case series.

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

Retronychia Inversa: Insights Into a Newly Defined Nail Condition.

International journal of dermatology·2026
Same author

Development of a Core Outcome Domain Set for Facial Aging.

JAMA dermatology·2026
Same author

Platelet-Rich Plasma Devices in Dermatology.

Dermatologic clinics·2026
Same author

Emerging pharmacotherapies for androgenetic alopecia.

Expert opinion on pharmacotherapy·2026

Related Experiment Video

Updated: Jul 23, 2025

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

15.1K

Pressure alopecias: A review.

Eduardo Corona-Rodarte1, Luis Enrique Cano-Aguilar2, Luisa Fernanda Baldassarri-Ortego3

  • 1Department of Dermatology, Instituto Dermatológico de Jalisco José Barba Rubio, Zapopan, Mexico.

Journal of the American Academy of Dermatology
|July 16, 2023
PubMed
Summary

Pressure-induced alopecias (PAs) are hair loss conditions caused by capillary obstruction due to external pressure. Early diagnosis and treatment are key for hair regrowth, as most cases are reversible.

Keywords:
abdominal surgeryanagen effluviumcalcium hydroxyapatitecardiac surgerydeoxycholic acidfat graftingfiller complicationgynecological and breast surgeryhyaluronic acidhyaluronidasemaxillofacial surgerymesotherapynonscarring alopeciapostoperative alopeciascarring alopeciatrichoscopy

More Related Videos

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

9.0K
Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
09:03

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Published on: June 20, 2015

10.0K

Related Experiment Videos

Last Updated: Jul 23, 2025

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

15.1K
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

9.0K
Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
09:03

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Published on: June 20, 2015

10.0K

Area of Science:

  • Dermatology
  • Pathophysiology

Background:

  • Pressure-induced alopecias (PAs) are rare conditions causing hair loss due to capillary ischemia.
  • PAs are classified into Type 1 (prolonged external pressure) and Type 2 (cosmetic procedures, e.g., injectables).

Purpose of the Study:

  • To review the clinical presentation, diagnosis, and management of pressure-induced alopecias.
  • To differentiate Type 2 PA from other forms of alopecia.

Main Methods:

  • Literature review of pressure-induced alopecias.
  • Analysis of clinical features, diagnostic tools (trichoscopy), and treatment outcomes.

Main Results:

  • PAs can manifest solely as hair loss or with erythema, swelling, and tenderness.
  • Cosmetic procedures are an increasingly reported cause of Type 2 PA.
  • Trichoscopy may offer diagnostic clues, though it's often nonspecific.
  • Prognosis depends on ischemia severity and timely intervention; most cases are reversible.

Conclusions:

  • Prompt diagnosis of PAs is crucial to prevent scarring.
  • While often self-limited, severe ischemia requires reperfusion therapies or mobilization.
  • The efficacy of minoxidil and corticosteroids for PA treatment is currently unknown.