Trichoscopy – a valuable tool for identifying conditions mimicking androgenetic alopecia

Androgenetic alopecia (AGA) is the most prevalent type of hair loss in women and men. Recently, a European consensus group published guidelines for the diagnostic evaluation of AGA in men, women, and adolescents. This S1 guideline presents expert opinion‐based recommendations for gender‐dependent steps in the diagnostic procedure, which can easily be implemented in the daily clinical routine. For diagnosing AGA, detailed anamnesis and objective learning are not enough because there are several conditions mimicking this disease. Trichoscopy can be considered an important, non‐invasive tool for diagnosing hair and scalp disorders that may have similar clinical signs to AGA.

[1]  K. Ghoreschi,et al.  Alopecia areata – Current understanding and management , 2022, Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG.

[2]  H. Cabo,et al.  Clinical and Dermoscopic Approaches to Diagnosis of Frontal Fibrosing Alopecia: Results From a Multicenter Study of the International Dermoscopy Society , 2022, Dermatology practical & conceptual.

[3]  M. Uchiyama Primary cicatricial alopecia: Recent advances in evaluation and diagnosis based on trichoscopic and histopathological observation, including overlapping and specific features , 2021, The Journal of dermatology.

[4]  M. Miteva Trichoscopy-Guided Scalp Biopsy , 2021, Hair Pathology with Trichoscopic Correlations.

[5]  L. Afifi,et al.  Review of traction alopecia in the pediatric patient: Diagnosis, prevention, and management , 2021, Pediatric dermatology.

[6]  B. Bhoyrul,et al.  Significant hair regrowth in a Middle Eastern woman with central centrifugal cicatricial alopecia , 2021, Clinical and experimental dermatology.

[7]  A. McMichael,et al.  Bitemporal Scalp Hair Loss: Differential Diagnosis of Nonscarring and Scarring Conditions. , 2021, The Journal of clinical and aesthetic dermatology.

[8]  B. Piraccini,et al.  Common causes of hair loss – clinical manifestations, trichoscopy and therapy , 2020, Journal of the European Academy of Dermatology and Venereology : JEADV.

[9]  M. Jafferany,et al.  Hair‐pulling disorder (Trichotillomania): Etiopathogenesis, diagnosis and treatment in a nutshell , 2020, Dermatologic therapy.

[10]  R. Sinclair,et al.  Bitemporal alopecia areata , 2020, The Australasian journal of dermatology.

[11]  M. Mathur,et al.  Trichoscopy of primary cicatricial alopecias: an updated review , 2020, Journal of the European Academy of Dermatology and Venereology : JEADV.

[12]  B. Piraccini,et al.  Long‐standing patchy alopecia areata along the hairline, a variety of alopecia areata mimicking frontal fibrosing alopecia and other cases of hair loss: case series of 11 patients , 2019, Journal of the European Academy of Dermatology and Venereology : JEADV.

[13]  B. Piraccini,et al.  Diffuse variants of scalp Lichen Planopilaris: clinical, trichoscopic and histopathologic features of 40 patients. , 2019, Journal of the American Academy of Dermatology.

[14]  B. Piraccini,et al.  Female Androgenetic Alopecia: An Update on Diagnosis and Management , 2019, American Journal of Clinical Dermatology.

[15]  B. Piraccini,et al.  Alopecia Areata Incognita and Diffuse Alopecia Areata: Clinical, Trichoscopic, Histopathological, and Therapeutic Features of a 5-Year Study. , 2019, Dermatology practical & conceptual.

[16]  Amir Teimourpour,et al.  Assessing the correlation between trichoscopic features in lichen planopilaris and lichen planopilaris activity index , 2019, The Australasian journal of dermatology.

[17]  L. Sperling,et al.  Lichen planopilaris and frontal fibrosing alopecia cannot be differentiated by histopathology , 2018, Journal of cutaneous pathology.

[18]  U. Blume-Peytavi,et al.  Cicatricial alopecia , 2018, Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG.

[19]  M. Polat Evaluation of clinical signs and early and late trichoscopy findings in traction alopecia patients with Fitzpatrick skin type II and III: a single‐center, clinical study , 2017, International journal of dermatology.

[20]  A. Messenger,et al.  Genetics and other factors in the aetiology of female pattern hair loss , 2017, Experimental dermatology.

[21]  T. Uzunçakmak,et al.  Trichotillomania and Traction Alopecia , 2017 .

[22]  E. Rodríguez-Lobato,et al.  Differential Diagnosis of Female-Pattern Hair Loss , 2016, Skin Appendage Disorders.

[23]  A. Rebora Trichodynia: a review of the literature , 2016, International journal of dermatology.

[24]  S. Calvieri,et al.  Conditions simulating androgenetic alopecia , 2015, Journal of the European Academy of Dermatology and Venereology : JEADV.

[25]  A. Tosti,et al.  Dermatoscopic features of central centrifugal cicatricial alopecia. , 2014, Journal of the American Academy of Dermatology.

[26]  W. Bergfeld,et al.  Androgenetic Alopecia: An Evidence-Based Treatment Update , 2014, American Journal of Clinical Dermatology.

[27]  Daniel Bremell,et al.  Lyme Neuroborreliosis Diagnosis and Treatment , 2014 .

[28]  L. Rudnicka,et al.  New trichoscopy findings in trichotillomania: flame hairs, V-sign, hook hairs, hair powder, tulip hairs. , 2014, Acta dermato-venereologica.

[29]  A. Tosti,et al.  Role of Trichoscopy in Children's Scalp and Hair Disorders , 2013, Pediatric dermatology.

[30]  U. Khopkar,et al.  Trichoscopy in Alopecias: Diagnosis Simplified , 2013, International journal of trichology.

[31]  W. Rassman,et al.  Phenotype of normal hairline maturation. , 2013, Facial plastic surgery clinics of North America.

[32]  A. Tosti,et al.  Histopathologic features of alopecia areata incognito: a review of 46 cases , 2012, Journal of cutaneous pathology.

[33]  A. Tosti,et al.  Dermoscopy guided scalp biopsy in cicatricial alopecia , 2012, Journal of the European Academy of Dermatology and Venereology : JEADV.

[34]  A. Tosti,et al.  Evidence‐based (S3) guideline for the treatment of androgenetic alopecia in women and in men , 2011, Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG.

[35]  A. Tosti,et al.  S1 guideline for diagnostic evaluation in androgenetic alopecia in men, women and adolescents , 2011, The British journal of dermatology.

[36]  A. Tosti,et al.  Hair casts are a dermoscopic clue for the diagnosis of traction alopecia , 2010, The British journal of dermatology.

[37]  Lidia Rudnicka,et al.  Dermoscopy in Female Androgenic Alopecia: Method Standardization and Diagnostic Criteria , 2009, International journal of trichology.

[38]  E. Poblet,et al.  Frontal fibrosing alopecia versus lichen planopilaris: a clinicopathological study , 2005, International journal of dermatology.

[39]  R. Sinclair Chronic telogen effluvium or early androgenetic alopecia? , 2004, International journal of dermatology.

[40]  A. Köşlü,et al.  The presence of trichodynia in patients with telogen effluvium and androgenetic alopecia , 2003, International journal of dermatology.

[41]  H. Redmond,et al.  Waardenburg syndrome type 2 in a Turkish family: implications for the importance of the pattern of fundus pigmentation , 2001, Irish Journal of Psychological Medicine.

[42]  V. Sehgal,et al.  Lichen planopilaris [cicatricial (scarring) alopecia] in a child , 2001, International journal of dermatology.

[43]  H. Morgan Traction Alopecia , 1960, British medical journal.

[44]  A. Tosti,et al.  How to Best Confirm Diagnosis Before Starting Treatment , 2019, Hair and Scalp Treatments.

[45]  J. Shapiro,et al.  Alopecia areata: Disease characteristics, clinical evaluation, and new perspectives on pathogenesis. , 2018, Journal of the American Academy of Dermatology.

[46]  C. Hees Primary cicatricial alopecia , 2013 .

[47]  D. Elston,et al.  Central centrifugal cicatricial alopecia , 2013, Indian dermatology online journal.

[48]  F. Mulinari-Brenner,et al.  Clinical and histological challenge in the differential diagnosis of diffuse alopecia: female androgenetic alopecia, telogen effluvium and alopecia areata - part I. , 2012, Anais Brasileiros de Dermatologia.

[49]  L. Rudnicka,et al.  Classic Lichen Planopilaris and Graham Little Syndrome , 2012 .

[50]  C. Blazek,et al.  Lichen planopilaris , 2008, Der Hautarzt.

[51]  Edward A. Jackson Hair disorders. , 2000, Primary care.