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    Did you mean Terminal to Vellus Hair Ratio?
    Glossary Terminal to Vellus Hair Ratio

    proportion of thick hairs to fine hairs on the scalp

    The Terminal to Vellus Hair Ratio refers to the proportion of thick, pigmented hairs (terminal hairs) to fine, short, and lightly pigmented or non-pigmented hairs (vellus hairs) on the scalp or other parts of the body. This ratio is often used in the diagnosis and monitoring of hair loss conditions like androgenetic alopecia, where a decrease in the ratio indicates a shift from terminal to vellus hair, signifying hair thinning and miniaturization.

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    1. Effects of platelet-rich plasma application on hair follicle count, telogen/anagen ratio, and miniaturized hair ratio in patients with androgenic alopecia: alone or in combination with other treatments Journal of Dermatological Treatment · 2025
    2. Is TrichoScan a new diagnostic method for diffuse hair loss? Turkish Journal of Medical Sciences · 2014 · 2 citations
    3. Hair Counts from Normal Scalp Biopsy in Taiwan Dermatologic Surgery · 2012 · 24 citations
    4. Hair Loss Physiology and Transplantation Principles 2020
    5. Dermoscopy in hair disorders Menoufia Medical Journal · 2014 · 12 citations
    6. Concentrated Growth Factor from Autologous Platelet Promotes Hair Growth in Androgenetic Alopecia Journal of Biomedical Science and Engineering · 2019 · 1 citations
    7. Mapping the hair density, thickness, and volume in normal and androgenetic alopecia subjects with the digital microscope JEADV Clinical Practice · 2022
    8. Scalp Biopsy and Diagnosis of Common Hair Loss Problems InTech eBooks · 2013 · 2 citations
    9. Clinicopathological insights into the phenotypic variation of autosomal recessive hypotrichosis/wooly hair by c.736T>A LIPH mutation Journal of dermatological science · 2016
    10. The reliability of horizontally sectioned scalp biopsies in the diagnosis of chronic diffuse telogen hair loss in women Journal of The American Academy of Dermatology · 2004 · 137 citations
    11. The Effect of Plasma Rich in Growth Factors on Pattern Hair Loss: A Pilot Study Dermatologic Surgery · 2017 · 70 citations
    12. Efficacy of Hair Mesotherapy With Biomimetic Peptides and Micronutrients in Patients With Androgenetic Alopecia: A Retrospective Observational Study Journal of Cosmetic Dermatology · 2026
    13. Characteristic findings by phototrichogram in southern Chinese women with Female pattern hair loss Skin Research and Technology · 2019 · 10 citations
    14. Efficacy of intramuscular injections of biotin and dexpanthenol in the treatment of diffuse hair loss: A randomized, double‐blind controlled study comparing two brands Dermatologic Therapy · 2022 · 1 citations
    15. Efficacy and tolerability assessment of a polynucleotide‐based gel for improvement of pattern hair loss Running title: A polynucleotide‐based gel for improvement of pattern hair loss Research Square (Research Square) · 2023
    16. Follicular miniaturization in female pattern hair loss: clinicopathological correlations British Journal of Dermatology · 2006 · 100 citations
    17. Hair Follicle Miniaturization in a Woolly Hair Nevus American Journal of Dermatopathology · 2016 · 6 citations
    18. Trichoscopic characteristics as diagnostic indicators for grading of female pattern hair loss severity in skin of color: A multicentric retrospective study by the International Dermoscopy Society Journal of Cutaneous and Aesthetic Surgery · 2026
    19. Pathogenetic Rationale for the Use of Exosomes Derived from Salmon Tissue in Patients with Androgenetic Alopecia: A Prospective Uncontrolled Observational Study Russian Journal of Skin and Venereal Diseases · 2026
    20. Occipital involvement in female pattern hair loss: histopathological evidences Journal of The European Academy of Dermatology and Venereology · 2009 · 20 citations
    21. Trichoscopic Patterns of Scalp Dermatoses: An Observational Cross-sectional Study Journal of Clinical and Diagnostic Research · 2023
    22. The Value of Trichoscopy in the Follow-up of Treatment Response in Patients with Androgenetic Alopecia. PubMed · 2024
    23. Trichoscopic Markers as Predictors of Treatment Response in Androgenetic Alopecia: A Systematic Review Journal of Cosmetic Dermatology · 2026
    24. Telogen Effluvium Dermatology · 2009 · 32 citations
    25. Histopathological Evidence of Occipital Involvement in Male Androgenetic Alopecia Frontiers in Medicine · 2021 · 3 citations
    26. Efficacy of autologous stromal vascular fraction injection in the treatment of androgenic alopecia Archives of Dermatological Research · 2022 · 1 citations
    27. Effectiveness and Safety of Topical Finasteride for Male Androgenetic Alopecia: Real World Data International Journal of Dermatology · 2026
    28. 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
    29. Correlation of trichoscopic findings with clinico-epidemiological factors in male pattern <span style="font-size: 1rem;">hairloss: A cross-sectional study from a tertiary care center in Chengalpattu</span> IP Indian Journal of Clinical and Experimental Dermatology · 2026
    30. Histopathologic prognostic factors for alopecia areata treated by intralesional corticosteroid Journal of The American Academy of Dermatology · 2016