Evaluating the Accuracy of Patient-Reported Hair Outcomes Versus Trichometric Measurements in PRP Therapy

    May 2025 in “ Archives of Dermatological Research ”
    Anna Brinks, Deesha Desai, Carli D. Needle, Caitlin A. Kearney, Ambika Nohria, Michelle Sikora, Christina S. Oh, Nnaemeka Anyanwu, Jerry Shapiro, Kristen I. Lo Sicco
    TLDR Patient-reported hair improvements align with actual hair density changes, not hair width.
    This study evaluated the correlation between patient-reported outcomes and trichometric measurements in 56 alopecia patients undergoing PRP therapy at NYU Langone Health. Patients were categorized based on self-assessments as “improved,” “stable,” or “worse,” and changes in hair density and width were measured. The results showed a significant correlation between patient-reported outcomes and changes in hair density (p = 0.0006), but not hair width (p = 0.2688). The “improved” group saw an increase of +18.9 hairs/cm², the “stable” group had a gain of +7.6 hairs/cm², and the “worse” group experienced a decrease of −19.7 hairs/cm². These findings suggest that patient perception aligns more closely with changes in hair density than width, highlighting the importance of combining subjective assessments with objective measurements for evaluating PRP treatment efficacy in alopecia patients.
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