PMID- 25932055
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150501
LR  - 20201001
IS  - 1898-7249 (Print)
IS  - 1898-7249 (Electronic)
IS  - 1898-7249 (Linking)
VI  - 9
IP  - 1
DP  - 2015 Mar 31
TI  - Trichoscopy findings in loose anagen hair syndrome: rectangular granular 
      structures and solitary yellow dots.
PG  - 1-5
LID - 10.3315/jdcr.2015.1193 [doi]
AB  - 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.
FAU - Rakowska, Adriana
AU  - Rakowska A
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Zadurska, Malgorzata
AU  - Zadurska M
AD  - Department of Orthodontics, Medical University of Warsaw, Poland.
FAU - Czuwara, Joanna
AU  - Czuwara J
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Warszawik-Hendzel, Olga
AU  - Warszawik-Hendzel O
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Kurzeja, Marta
AU  - Kurzeja M
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Maj, Malgorzata
AU  - Maj M
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Olszewska, Malgorzata
AU  - Olszewska M
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
FAU - Rudnicka, Lidia
AU  - Rudnicka L
AD  - Department of Dermatology, Medical University of Warsaw, Poland;
LA  - eng
PT  - Journal Article
DEP - 20150331
PL  - Poland
TA  - J Dermatol Case Rep
JT  - Journal of dermatological case reports
JID - 101493700
PMC - PMC4410883
OTO - NOTNLM
OT  - alopecia
OT  - dermatoscopy
OT  - dermoscopy
OT  - hair
OT  - hair loss
EDAT- 2015/05/02 06:00
MHDA- 2015/05/02 06:01
PMCR- 2015/03/31
CRDT- 2015/05/02 06:00
PHST- 2015/02/14 00:00 [received]
PHST- 2015/03/10 00:00 [accepted]
PHST- 2015/05/02 06:00 [entrez]
PHST- 2015/05/02 06:00 [pubmed]
PHST- 2015/05/02 06:01 [medline]
PHST- 2015/03/31 00:00 [pmc-release]
AID - 10.3315/jdcr.2015.1193 [doi]
PST - epublish
SO  - J Dermatol Case Rep. 2015 Mar 31;9(1):1-5. doi: 10.3315/jdcr.2015.1193. 
      eCollection 2015 Mar 31.