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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.

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    Research 30 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
    11. Comparative Study of Trichoscopic Features of Alopecia Areata between Adults and Children and between Different Body Parts (Scalp, Beard, Eyebrow, and Moustache) Indian Journal of Dermatology · 2024 · 2 citations
    12. Hair Loss Pattern due to Chemotherapy-Induced Anagen Effluvium: A Cross-Sectional Observation Dermatology · 2007 · 53 citations
    13. Light microscopy of the hair: A simple tool to "untangle" hair disorders International Journal of Trichology · 2011 · 24 citations
    14. Hair shaft abnormalities after chemotherapy and tamoxifen therapy in patients with breast cancer evaluated by optical coherence tomography British Journal of Dermatology · 2012 · 16 citations
    15. Evaluation of SALT score severity in correlation with trichoscopic findings in alopecia areata: a study of 303 patients Archives of Dermatological Research · 2025 · 7 citations
    16. Pigmented vellus and upright regrowing hairs as the only predictive trichoscopic markers of hair regrowth in alopecia totalis and universalis Dermatology Review · 2019 · 2 citations
    17. Clinical and trichoscopic features of early congenital syphilis: a single-center cross-sectional study Frontiers in Medicine · 2026
    18. Plica Neuropathica (Polonica) Secondary to Diffuse Alopecia: A Case Report and Literature Review Cureus · 2025
    19. Trichoscopy‐assisted hair pull test: A helpful adjunct to trichoscopy for diagnosing and managing alopecias Australasian Journal of Dermatology · 2021
    20. Drug-Induced Hair Disorders Current Drug Safety · 2006 · 40 citations
    21. Drug Reactions Affecting Hair: Diagnosis Dermatologic Clinics · 2007 · 85 citations
    22. Hair Shaft Dysplasias International Journal of Dermatology · 1988 · 19 citations
    23. Hair Shafts in Trichoscopy Dermatologic Clinics · 2013 · 86 citations
    24. Evaluation and diagnosis of the hair loss patient Journal of The American Academy of Dermatology · 2014 · 69 citations
    25. Presentation, impact and prevention of chemotherapy-induced hair loss: scalp cooling potentials and limitations Expert review of dermatology · 2011 · 62 citations
    26. Hair disorders in patients with cancer Journal of The American Academy of Dermatology · 2018 · 53 citations
    27. Involvement of scalp and nails in lupus erythematosus Lupus · 2010 · 44 citations
    28. Malignancy and Cancer Treatment-Related Hair and Nail Changes Dermatologic Clinics · 2007 · 43 citations
    29. Trichoscopy Dermatologic Clinics · 2012 · 42 citations
    30. Trichoscopy in Hair Shaft Disorders Dermatologic Clinics · 2018 · 36 citations