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    Glossary Global Photographic Assessment

    standardized method to evaluate hair changes using comparative photos

    Global Photographic Assessment (GPA) is a standardized method used to evaluate hair growth and hair loss by comparing photographs taken at different times. This technique allows both patients and healthcare professionals to visually track changes in hair density and scalp coverage, providing a clear and objective measure of treatment effectiveness or disease progression.

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    Research 30 of 1000+

    1. Reproducibility of global photographic assessments of patients with male pattern baldness in a clinical trial with finasteride. Journal of Investigative Dermatology · 1995 · 5 citations
    2. Global photographic assessment of men aged 18 to 60 years with male pattern hair loss receiving finasteride 1 mg or placebo Journal of The American Academy of Dermatology · 2012 · 35 citations
    3. Efficacy and Safety of Oral Minoxidil 5 mg Once Daily in the Treatment of Male Patients with Androgenetic Alopecia: An Open-Label and Global Photographic Assessment Dermatology and therapy · 2020 · 24 citations
    4. Reliability and Validity of a Photographic Method for Measuring Facial Hair Density in Men Archives of Dermatology · 2011 · 4 citations
    5. Assessment of hair loss: clinical relevance of hair growth evaluation methods Clinical and Experimental Dermatology · 2002 · 41 citations
    6. Imaging Tools for Noninvasive Hair Assessment Cutis · 2023
    7. The efficacy and safety of dutasteride compared with finasteride in treating men with androgenetic alopecia: a systematic review and meta-analysis Clinical Interventions in Aging · 2019 · 38 citations
    8. Effects of Finasteride (1 mg) on Hair Transplant Dermatologic Surgery · 2005 · 23 citations
    9. Finasteride in the treatment of Japanese men with male pattern hair loss. PubMed · 2004 · 12 citations
    10. Efficacy and safety of 3% minoxidil versus combined 3% minoxidil / 0.1% finasteride in male pattern hair loss: a randomized, double-blind, comparative study. PubMed · 2012 · 6 citations
    11. Efficacy and safety of spironolactone versus bicalutamide in female pattern hair loss: A retrospective comparative study Australasian journal of dermatology · 2024
    12. Comparison of a New 5% Minoxidil Foam and Rogaine® in the Treatment of Androgenetic Alopecia in Chinese Men: A Randomized, Double-Blind, Phase III, Equivalence Trial Dermatologic Therapy · 2023
    13. Microneedling plus topical dutasteride solution for androgenetic alopecia: a randomized placebo‐controlled study Journal of The European Academy of Dermatology and Venereology · 2022
    14. Efficacy and tolerability of finasteride 1 mg in men aged 41 to 60 years with male pattern hair loss. PubMed · 2003 · 22 citations
    15. The effectiveness of combination therapies for androgenetic alopecia: A systematic review and meta‐analysis Dermatologic Therapy · 2020 · 11 citations
    16. Evaluation of the efficacy of a biomimetic peptide solution for rejuvenation of donor scalp and as storage media for hair follicle grafts during FUE hair transplantation Journal of Cosmetic and Laser Therapy · 2025
    17. 5 mg/day finasteride treatment for normoandrogenic Asian women with female pattern hair loss Journal of The European Academy of Dermatology and Venereology · 2010 · 64 citations
    18. Effects of Finasteride (1 mg) on Hair Transplant Dermatologic Surgery · 2006 · 30 citations
    19. Progression of hair loss in men with androgenetic alopecia (male pattern hair loss): long-term (5-year) controlled observational data in placebo-treated patients. 2008 · 9 citations
    20. Minoxidil dose response study in female pattern hair loss patients determined to be non-responders to 5% topical minoxidil. PubMed · 2017 · 4 citations
    21. Low-level Laser Therapy with Novel Array of Light Source and Individualized Program for Treatment of Androgenetic Alopecia: A 16-week, Randomized, Double-blind, Sham Device-controlled Study Medical lasers · 2020 · 1 citations
    22. 841 Minoxidil dose response study in female pattern hair loss patients determined to be non-responders to 5% topical Minoxidil Journal of Investigative Dermatology · 2017 · 1 citations
    23. Comparing minoxidil-finasteride mixed solution with minoxidil solution alone for male androgenetic alopecia: a systematic review and meta-analysis of randomized controlled trials Frontiers in Medicine · 2025
    24. Application of Thulium 1927-nm Laser for Androgenic Alopecia Treatment in Indonesian Patients. PubMed · 2025
    25. Application of Thulium 1927-nm Laser for Androgenic Alopecia Treatment in Indonesian Patients Journal of lasers in medical sciences · 2025
    26. 62471 Topical Finasteride Combined with Minoxidil for Androgenetic Alopecia: An Updated Systematic Review and Meta-analysis Journal of the American Academy of Dermatology · 2025
    27. Efficacy of autologous dermal sheath cup cell transplantation in male and female pattern hair loss: A Single‐Arm, Multi‐Center, phase III equivalent clinical study The Journal of Dermatology · 2023
    28. Improving the efficacy of anti-hair loss drugs treatments with a cosmetic lotion containing caffeine, taurine and growth factors 2022
    29. Effect of intralesional injection of autologous platelet rich plasma in patterned hair loss International Journal of Research in Dermatology · 2020
    30. Efficacy of Dr. SKS Hair Booster Serum in the Treatment of Female Pattern Alopecia in Patients With PCOS: An Open-Label, Non-randomized, Prospective Study Cureus · 2023