33 citations
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July 1992 in “Journal of Investigative Dermatology” Minoxidil doesn't affect perifollicular lymphoid infiltration in alopecia areata patients.
1 citations
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September 2021 in “Journal of The American Academy of Dermatology” This study observed that inflammation in androgenetic alopecia samples was similar to alopecia areata controls, but infundibular and isthmic inflammation were significantly more common in androgenetic alopecia cases.
January 2024 in “Dermatology practical & conceptual” In this study, researchers found that the peripilar sign in patients with androgenetic alopecia does not indicate perifollicular infiltrate but is more frequent in individuals with lighter skin types due to contrast with the skin.
January 2026 in “Clinical Cosmetic and Investigational Dermatology” This study found that targeting both hormonal and immune pathways improved treatment outcomes in androgenetic alopecia patients with an under-recognized inflammatory component called PIILIF, which may contribute to treatment resistance.
10 citations
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June 1998 in “International Journal of Dermatology” This article discusses inflammatory perifollicular fibrosis and alopecia but provides no new research findings.