Contents
pdf Download PDF pdf Download XML
107 Views
51 Downloads
Share this article
Research Article | Volume 9 Issue 1 (None, 2015) | Pages 1 - 5
Trichoscopy findings in loose anagen hair syndrome: rectangular granular structures and solitary yellow dots
 ,
 ,
 ,
 ,
 ,
 ,
 ,
Under a Creative Commons license
Open Access
PMID : PMC4410883
Received
Feb. 14, 2015
Published
March 31, 2015
Abstract

Background:Loose anagen hair syndrome (LAHS) is typically diagnosed in girls older than 2 years who present with hair that "will not grow". Hair microscopic examination shows absent inner and outer root sheaths, ruffling of the cuticle on the proximal hair shaft and deformed pigmented anagen bulbs.Objective:The aim of the study was to assess whether there are characteristic trichoscopic features favoring the diagnosis of LAHS.Patients and methods:Eighty nine children patients were included into the study (24 girls with LAHS, 25 with alopecia areata, 20 with telogen effluvium and 20 healthy children). In all groups trichoscopy was performed. Trichoscopy images were analyzed for abnormalities in the hairs shafts, the hair follicle openings and the interfollicular area. Results:Dirty dots were present in all groups. A unique feature of LAHS was the presence of rectangular black granular structures which differs from dense black dots seen in patients with alopecia areata. This feature was observed in 71% of patients with LAHS. Follicular units with single hairs constituted 92,9% of hair units in these patients (65,5% in telogen effluvium and 53% in the control group). Solitary yellow dots were found in 50% of patient with LAHS and in 24% of patients with alopecia areata, but was not found in control group or in patients with telogen effluvium.Conclusion:The trichoscopy features favoring the diagnosis of LAHS are: rectangular black granular structures, solitary yellow dots and major predominance of follicular units with single hairs.

Keywords
Recommended Articles
Case Report
Concurrent Lepra Reactions; Type 1 and Type 2 in a young male patient with borderline leprosy: Clinical and Histopathological correlation
...
Published: 02/09/2025
Original Article
Comparative Evaluation of Intralesional Corticosteroid Injection and Surgical Excision in Hypertrophic Scar Treatment
...
Published: 04/06/2022
Research Article
Efficacy of supra bioavailable itraconazole and conventional itraconazole at different dosing regimens in glabrous tinea infection
Published: 02/02/2024
Research Article
Multiple eruptive periungual pyogenic granulomas during anti-CD20 monoclonal antibody therapy for rheumatoid arthritis
Published: 19/12/2010
© Copyright Spejalisci Dermatolodzy