The Comparative Histopathology of Male-Pattern Baldness and Senescent Baldness

The document discussed the uncertainties and controversies surrounding the histopathology of male-pattern baldness (MPB), also known as androgenetic alopecia, in 1988. While it was agreed that hair follicles become progressively smaller or miniaturized, there was debate over whether there was an actual loss of follicles. Additionally, there were conflicting views on the condition of sebaceous glands and the fate of arrector pili muscles. Despite substantial knowledge of scalp anatomy and hair cycling, the histopathological understanding of MPB remained unclear, and significant publications on aging did not address hair-related changes.