ArticleInternational journal of trichology2009
Dermoscopy in female androgenic alopecia: method standardization and diagnostic criteria.
Article in International journal of trichology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05456087 (Use of Botulinum Toxin in the Treatment of Androgenic Alopecia), which is not on this map. Cited by 60 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Use of Botulinum Toxin in the Treatment of Androgenic Alopecia
Who cites it
60 citing papers in PubMed, 188 citations in OpenAlex.
- Topical latanoprost acid for female androgenetic alopecia: a pilot proof-of-concept trial with mechanistic evidence of prostaglandin F2α receptor activation.Pharmacological reports : PR · 2026Trial
- Novel Combination Scalp Therapy for Androgenetic Alopecia: A Preliminary Retrospective Case Series with an Illustrative Four-Year Case.Journal of clinical medicine · 2026Article
- The Possible Role of Antibodies in Alopecia: A Narrative Review.Antibodies (Basel, Switzerland) · 2026Review
- Research and application of digital technology in the diagnosis and treatment of androgenetic alopecia.Frontiers in digital health · 2026Review
- Trichoscopic Features, Clinical Correlates, and Risk Prediction in Female Pattern Hair Loss: A Retrospective Case-Control Study.Clinical, cosmetic and investigational dermatology · 2026Article
- An international multicenter, retrospective cohort study of 203 patients with pediatric androgenetic alopecia.Journal of the American Academy of Dermatology · 2025Article
- Clinical and Trichoscopic Evaluations of Topical Finasteride 1%, Topical Spironolactone 5%, and Minoxidil 5% in Female Pattern Hair Loss Treatment.Dermatology practical & conceptual · 2025Article
- Research progress in the treatment of non-scarring alopecia: mechanism and treatment.Frontiers in pharmacology · 2025Review
- Effectiveness of Autologous Platelet-Rich Plasma for Androgenetic Alopecia: A Double-Center, Non-Controlled, Randomized Clinical Study in Vietnam.Clinical, cosmetic and investigational dermatology · 2025Article
- Application of multi-omics techniques to androgenetic alopecia: Current status and perspectives.Computational and structural biotechnology journal · 2024Review
- Deciphering the Role of Androgen in the Dermatologic Manifestations of Polycystic Ovary Syndrome Patients: A State-of-the-Art Review.Diagnostics (Basel, Switzerland) · 2024Review
- Impact of Photobiomodulation on the Quality of Life of Men and Women With Androgenetic Alopecia.Cureus · 2024Article
- Diagnostic and grading criteria for androgenetic alopecia using dermoscopy.Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) · 2024Article
- Trichoscopy of Androgenetic Alopecia: A Systematic Review.Journal of clinical medicine · 2024Review
- Peripilar Sign in Androgenetic Alopecia: Does It Really Indicate Peripilar Infiltrate?Dermatology practical & conceptual · 2024Article
- Assessment of Occipital Involvement Among a Large Population of Females with Pattern Hair Loss in Saudi Arabia.Clinical, cosmetic and investigational dermatology · 2023Article
- Trichoscopy in Healthy Adult Egyptian Females: Normal Values of Hair Measurable Parameters.Skin appendage disorders · 2022Article
- Clinical and Trichoscopic Graded Live Visual Scale for Androgenetic Alopecia.Dermatology practical & conceptual · 2022Article
- Comparison of Dermoscopic Findings in Female Androgenetic Alopecia and Telogen Effluvium and Female Controls in a Tertiary Care Center.The Journal of clinical and aesthetic dermatology · 2022Article
- Evaluation of Susceptibility Genes/Loci Associated with Male Androgenetic Alopecia (MAGA) for Female-Pattern Hair Loss in a Chinese Han Population and a Brief Literature Review.Medical science monitor : international medical journal of experimental and clinical research · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveEstablishing the trichoscopy criteria of female androgenic alopecia (FAGA).
designTrichoscopy images were retrospectively evaluated.
settingDermatologic hospital-based clinic and private practice offices. PATIENTS AND
methodsOne hundred and thirty-one females (59 with androgenic alopecia, 33 with chronic telogen effluvium (CTE), 39 healthy controls). The diagnosis was based on clinical examination and confirmed by histopatology.
main outcome measureTrichoscopy results obtained in frontal, occipital and both temporal areas of the scalp under a 20-fold and 70-fold magnification, including average hair thickness, number of 'yellow dots' and vellus hairs, number of hairs in one pilosebaceous unit and percentage of follicular ostia with perifollicullar hyperpigmentation.
resultsAverage hair thickness in frontal area versus occiput was, respectively, 0.061 ± 0.008 mm versus 0.058 ± 0.007 mm in healthy controls, 0.047 ± 0.007 mm versus 0.052 ± 0.008 mm in androgenic alopecia and 0.056 ± 0.007 mm versus 0.053 ± 0.009 mm in CTE. Mean percentage of thin hairs (< 0.03 mm) in androgenic alopecia was 20.9 ± 12% and was significantly higher than in healthy controls (6.15 ± 4.6%, P < 0.001) or in CTE (10.4 ± 3.9%, P < 0.001). The number of yellow dots, pilosebaceous units with only one hair and with perifollicular hyperpigmentation was significantly increased in androgenic alopecia. Classification and Regression Tree Analysis was performed to establish diagnostic criteria for FAGA.
conclusionFAGA may be differentiated from CTE based on trichoscopy criteria. Major criteria are ratio of (1) more than four yellow dots in four images (70-fold magnification) in the frontal area, (2) lower average hair thickness in the frontal area compared to the occiput and (3) more than 10% of thin hairs (below 0.03 mm) in the frontal area. Minor criteria encompass increased frontal to occipital ratio of (1) single-hair pilosebaceous units, (2) vellus hairs and (3) perifollicular discoloration. Fulfillment of two major criteria or one major and two minor criteria allows to diagnose FAGA based on trichoscopy with a 98% specificity.
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