EfficientNet improves accuracy in diagnosing hair loss stages.
16 citations
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October 2012 in “The Journal of Dermatology” This study found that the BASP classification system for pattern hair loss showed better reproducibility and repeatability compared to the Norwood-Hamilton classification.
September 2020 in “Hair transplant forum international” This article memorializes Dr. O'Tar T. Norwood and highlights his contributions to the field of hair restoration surgery; it does not report new research findings.
9 citations
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January 2017 in “International Journal of Trichology” This review discusses various classification systems for male-pattern hair loss, comparing their detail, practicality, and reproducibility, and reports no new clinical outcomes.
101 citations
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January 2016 in “Journal of Cutaneous and Aesthetic Surgery” This review discusses various classification systems for patterned hair loss in both sexes and reports no new clinical findings, highlighting the Hamilton-Norwood and Ludwig systems as the most commonly used.
1 citations
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September 2016 in “Hair transplant forum international” This article proposes enhancing the Norwood-Hamilton scale for assessing hair loss patterns but reports no new clinical results.
July 2007 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” This study introduced the BASP classification, a new system for categorizing pattern hair loss in both men and women, and applied it to analyze 2213 Korean subjects.
1 citations
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January 2017 in “Springer eBooks” The document explains how hair loss patterns in men and women, known as Androgenetic alopecia, are classified using the Hamilton-Norwood system for men and the Ludwig grade system for women.
October 2022 in “Hair Transplantation” This review discusses genetic factors and associated diseases linked to androgenetic alopecia but reports no new clinical findings.
January 2016 in “Springer eBooks” This article reviews the classification systems for androgenetic alopecia and reports no new research findings.
March 2026 in “Frontiers in Medicine” This study suggests that traditional classification systems for pattern hair loss, while useful in the past, have limitations in accuracy and reproducibility, and highlights the potential of integrating digital imaging and AI to create more precise and biologically informed classification frameworks.
November 2009 in “Hair transplant forum international” This article discusses the use of the Hamilton and Norwood system by hair restoration surgeons to classify stages of androgenetic alopecia and presents no new clinical results.
41 citations
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May 2001 in “PubMed” This study proposes a new clinical scoring method for hair density based on hair diameter diversity, which correlates with existing measures and reflects follicle miniaturization in androgenetic alopecia.
5 citations
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January 1995 in “Journal of Investigative Dermatology” A trial found that using finasteride, a hair growth drug, can be effectively measured by comparing before and after photos.
4 citations
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October 2012 in “Archives of Dermatology” Hair diameter diversity is a key sign for diagnosing and managing male pattern baldness.
9 citations
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November 1993 in “Journal of The American Academy of Dermatology” Some men can have female pattern baldness without hormonal abnormalities or signs of feminization.
9 citations
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October 1988 in “Clinics in Dermatology” This paper discusses androgenetic alopecia, its causes, synonyms, and patterns, but reports no new findings or clinical results.
6 citations
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May 2006 in “Skinmed” This article reviews the classification history of androgenic alopecia and highlights the need for further research to find effective hair growth medications.
2 citations
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May 2002 in “PubMed” This review explores follicular unit micro-graft hair transplants for androgenetic alopecia, emphasizing their painless and permanent hair restoration capabilities, but it presents no new clinical findings.
50 citations
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December 2008 in “Clinical Endocrinology” This study found that young males with stage III or higher androgenetic alopecia had higher insulin resistance and cardiovascular-related features, suggesting the need for metabolic assessment in this population.
32 citations
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December 2004 in “BMC Public Health” This study found that trained observers using the Hamilton-Norwood classification were very reliable in assessing balding patterns, while men's self-assessments were moderately accurate compared to observers.
3 citations
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January 2015 in “DOAJ (DOAJ: Directory of Open Access Journals)” This study found no relationship between androgenic alopecia and parameters such as PSA level, IPSS, and prostate volume in men over 50.
This paper introduces the first computational model of male baldness that simulates hair loss using the Hamilton-Norwood classification and has been deemed plausible for clinical use by a dermatologist.
November 2018 in “Springer eBooks” Finasteride and minoxidil are effective, low-risk treatments for male hair loss, and patient education on these therapies is important.
January 2010 in “Ciencia UANL” This study found a significant relationship between androgenetic alopecia and insulin resistance-associated indicators like obesity in young men, suggesting a potential risk for developing cardiovascular and metabolic disorders.
October 2021 in “DOAJ (DOAJ: Directory of Open Access Journals)” In this hospital-based cross-sectional study, researchers observed that trichoscopy effectively differentiates between severe and mild male pattern hair loss by identifying specific features such as yellow and white dots, vellus hair, and hair shaft diversity.
103 citations
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June 2007 in “Endocrinology and Metabolism Clinics of North America” This article discusses treatment options for androgenetic alopecia, noting that medical interventions like finasteride and minoxidil can halt and partially reverse hair loss in mild to moderate cases, especially when combined with surgery.
8 citations
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January 2019 in “Clinical research and trials” This study found that long-term treatment with 1 mg/day finasteride over 10 years resulted in high efficacy and prevention of disease progression in Japanese men with androgenetic alopecia, with no serious adverse reactions reported.
4 citations
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January 2013 in “European Journal of Dermatology” Epigenetic differences affect hair loss in identical Japanese male twins.