Related Experiment Video
Updated: Jun 6, 2026

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
Published on: March 9, 2015
Poorly growing hair in a child
Diana Bolotin1, Bernhard Ortel, Sarah L Stein
1University of Chicago Medical Center, Section of Dermatology, MC5067 5841, South Maryland Avenue, Chicago, IL 60637, USA. dbolotin@uchicago.edu
Loose anagen syndrome is a hair disorder causing slow hair growth in children. Microscopic examination revealed characteristic findings in anagen hairs, confirming the diagnosis.
Area of Science:
- Pediatric Dermatology
- Trichology
- Genetics
Background:
- Loose anagen syndrome (LAS) is a condition characterized by the premature shedding of anagen hairs.
- It typically presents in childhood with complaints of poor or slow hair growth.
Observation:
- A healthy 5-year-old girl presented with a lifelong history of slow hair growth and fine-textured hair.
- Physical examination revealed short, fine, reddish-blond hair of varying lengths.
- Microscopic examination of plucked hairs showed characteristic features of loose anagen hair, including distorted bulbs and ruffled cuticles.
Findings:
- Hair pull test revealed easily epilated anagen hairs.
- Light microscopy confirmed the presence of loose anagen hairs, diagnostic of loose anagen syndrome.
- No other scalp abnormalities or systemic issues were identified.
Implications:
- This case highlights the importance of microscopic hair examination in diagnosing pediatric hair disorders.
- Early diagnosis of loose anagen syndrome can help manage parental concerns regarding hair growth.
- Further research into the genetic and molecular basis of loose anagen syndrome is warranted.
Related Concept Videos
Accessory Structures of the Skin: Hair Growth and Types
Multipotency and Niche of Bulge Stem Cell
Nature and Nurture
Accessory Structures of the Skin: Hair and Hair Follicles
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...
Accessory Structures of the Skin: Sebaceous Glands
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
Pharmacokinetics in Pediatric Patients: Drug Metabolism

