Recent Developments in the Histopathology of Non-scarring Alopecias.

The diagnosis of alopecia has traditionally relied on distinguishing between scarring and non-scarring forms, a differentiation that is not always straightforward from either a clinical or histopathological perspective. While the histopathological features of various types of alopecia are well established, recent reports have introduced new variants of non-scarring alopecia and identified histological features to achieve diagnosis. Some of these findings have therapeutic implications, while others provide novel pathogenic insights that enhance our understanding of alopecia. This article highlights recent advancements in the histopathology of non-scarring alopecia as reported in the literature.