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    Glossary Beau's lines

    horizontal grooves on nails indicating disrupted growth

    Beau's lines are horizontal grooves or indentations that appear across the nails, indicating a temporary disruption in nail growth. These lines can result from various factors, including severe illness, malnutrition, chemotherapy, or trauma to the nail matrix, and they often provide clues about the timing and duration of the underlying condition.

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    Research 10 of 1000+

    1. Beau lines and telogen effluvium following aluminium phosphide poisoning. PubMed · 2019
    2. Unilateral Beau's Lines Associatd with a Fingertip Crushing Injury The Journal of Dermatology · 2005 · 11 citations
    3. Beau's Lines Archives of Dermatology · 1980 · 11 citations
    4. Telogen effluvium, Beau lines, and acral peeling associated with COVID-19 infection JAAD Case Reports · 2021 · 7 citations
    5. Dapsone-induced erythroderma with Beau's lines Leprosy Review · 1989 · 7 citations
    6. Unravelling Beau's lines as a potential indicator of severe immune response in COVID-19 and reinfection European Journal of Case Reports in Internal Medicine · 2024 · 2 citations
    7. Beau’s Lines and COVID-19; A Systematic Review on Their Association Pathogens · 2024 · 1 citations
    8. A Case of Beau’s Lines at Even Intervals and Onycholysis Caused by Chemotherapy The Open Dermatology Journal · 2009 · 1 citations
    9. Transverse Leukonychia and Beau Lines Following COVID-19 Vaccination Cutis · 2022 · 2 citations
    10. Covid Lines Clinical case studies and reports · 2021
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    Community 2 of 3

    1. Finasteride beats Dutasteride!? Reddit · 2 Apr 2026
    2. Dutasteride thrice weekly beats finasteride. But daily? Reddit · 1 Dec 2025
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