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    Did you mean Pohl-Pinkus constrictions?
    Glossary Pohl-Pinkus constrictions

    narrow, weakened areas on hair shafts from growth disruptions

    Pohl-Pinkus constrictions are narrow, weakened areas along the hair shaft that can occur due to temporary disruptions in hair growth, often caused by physical or emotional stress, illness, or nutritional deficiencies. These constrictions can make the hair more prone to breakage and are sometimes used as indicators of past physiological stress in trichological examinations.

    Research 10 of 248

    1. Pohl-Pinkus constrictions of hair following chemotherapy for Hodgkin's disease British Journal of Haematology · 2005 · 8 citations
    2. Trichoscopy of alopecia areata: An update The Journal of Dermatology · 2018 · 89 citations
    3. Trichoscopic clues for the diagnosis of alopecia areata Türkderm Türk deri hastalıkları ve frengi arşivi · 2020 · 2 citations
    4. Dermoscopic And Clinical Features Of Alopecia Areata In Pakistani Patients: A Cross-Sectional Study Journal of Rawalpindi Medical College · 2025
    5. Efluvio anágeno. Hallazgos tricoscópicos Revista Dermatológica Centro Uraga · 2020
    6. Pediatric Radiation-Induced Alopecia Post Intracranial Vascular Malformation Embolization: A Case Report with Dermoscopic Findings Clinical Cosmetic and Investigational Dermatology · 2026
    7. A Prospective Study of Dermoscopic and Ultrastructural Features of Vitiligo-Associated Leukotrichia Clinical, cosmetic and investigational dermatology · 2023
    8. Telogen Effluvium due to Recombinant Interferon α-2b Dermatology · 2009 · 45 citations
    9. Monitoring chemotherapy‐induced alopecia with trichoscopy Journal of Cosmetic Dermatology · 2018 · 23 citations
    10. When the algorithm fails and experience wins: An extraordinary trichoscopic case Forum Dermatologicum · 2026
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