Renbök Phenomenon: Alopecia Areata Sparing Psoriasis Plaques

The document discussed the Renbök phenomenon, a recently described and rare occurrence where alopecia areata spares psoriasis plaques. Researchers aimed to understand the mechanisms behind the specific localization of skin lesions that result in distinct clinical presentations. They compared this phenomenon to other known phenomena such as co-localization, Wolf's isotopic phenomenon, and Koebner's phenomenon. Only a few cases of the Renbök phenomenon had been reported at the time of the study.