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    Glossary Foreign Body Reaction

    body's immune response to an implanted or invasive object

    A Foreign Body Reaction (FBR) is the body's immune response to a foreign object that has entered the tissue, such as a splinter, surgical implant, or even hair transplants. This reaction involves inflammation, the formation of a fibrous capsule around the object, and the recruitment of immune cells to the site in an attempt to isolate or expel the foreign material.

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    1. Immediate Post-Operative Folliculitis: A Foreign Body Reaction, Not an Infection International Society of Hair Restoration Surgery · 2025
    2. Regenerating Hair in Prevascularized Tissue Space Formed by a Controllable Foreign Body Reaction Advanced Functional Materials · 2020 · 11 citations
    3. A case of sarcoidal foreign body reaction to permanent makeup: the involvement of M2 macrophages Journal of Cutaneous Immunology and Allergy · 2024
    4. Beyond Appearances: Foreign Body Reaction of Hair Follicles as a Complication of Inflammatory Tinea Capitis (Kerion Celsi) Resolved South Asian Research Journal of Medical Sciences · 2026
    5. Caution with Hair Dye: Foreign Body Skull Erosive Granuloma from Exogenous Hair Pigmentation Annals of the Academy of Medicine Singapore · 2020 · 3 citations
    6. Adverse cutaneous reactions to soft tissue fillers – a review of the histological features Journal of Cutaneous Pathology · 2008 · 97 citations
    7. Synthetic hair reactions and treatment of complications: Case reports Journal of Cosmetic Dermatology · 2020 · 4 citations
    8. Recurrent pseudolymphomatous reaction to ear piercing: 20-year history Pathology · 2023
    9. Fiber implantation for pattern baldness Journal of The American Academy of Dermatology · 1981 · 15 citations
    10. Post waxing folliculitis: a clinicopathological evaluation International Journal of Dermatology · 2013 · 7 citations
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