20.500.12556/DiRROS-29156 Kerion celsi in elderly female, caused by Trichophyton rubrum case report Introduction: Kerion celsi is a form of deep inflammatory tinea capitis, presenting with suppurative, tender plaque, often with pustules and purulent drainage. Tinea capitis is believed to be increasing in incidence worldwide. It mostly affects children and is most commonly caused by zoophilic dermatophytes. Globally, the most common transmission route is anthropophilic. Case presentation: Here, we present a case of a 92-year-old female without associated chronic diseases, who lived alone in urban apartment and developed kerion in addition to having chronic untreated toenail onychomycosis and tinea pedis. Using PCR, we confirmed Trichophyton rubrum as the causative pathogen of toenail onychomycosis and kerion, suspecting autoinoculation pattern of transmission of dermatophytes from feet to the scalp. With the literature review, we discovered sporadic case reports, linking toenail onychomycosis caused by T. rubrum to development of kerion and kerion-like lesions in adult patients. Conclusion: Our case report: (1) adds another interesting case to series of rare cases of T. rubrum causing kerion in elderly, suspecting it is in fact more common than thought, (2) highlights PCR as a useful diagnostic tool for fast diagnosis and implementation of appropriate antifungal therapy, (3) recognizes a pattern of autoinoculation transmission of T. rubrum from toenail onychomycosis to the scalp, causing kerion celsi in elderly. autoinoculation dermatophytes kerion celsi onychomycosis Trichophyton rubrum avtoinokulacija dermatofiti kerion onihomikoza true false false Angleški jezik Slovenski jezik Neznano 2026-04-22 13:02:27 2026-04-22 13:02:27 2026-04-23 04:02:14 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 19. 9. 2025; str. 304-310 no. 1 Vol. 17 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2025-01-01 616.5 1662-6567 10.1159/000547156 249606403 RAZ_Jahic_Andraz_2025.pdf RAZ_Jahic_Andraz_2025.pdf 1 FB4710F1040441549B7D6D7333778E53 fdc9e0e6c5f65f79739343881c4399a104efb1ccdcc3f564caa1052f8fc52a9c eda14531-3e3a-11f1-a343-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43575 https://karger.com/cde/article/17/1/304/930007/Kerion-Celsi-in-Elderly-Female-Caused-by 1 c061b952-3e3a-11f1-a343-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43574 Univerzitetni klinični center Ljubljana 0 0 0