Differential Diagnosis of Male and Female Pattern Hair Loss

This document from 2018 discusses the differential diagnosis of male and female pattern hair loss, with a focus on androgenetic alopecia (AGA) and telogen effluvium. The document provides information on the physical examination, laboratory investigations, and scalp biopsy necessary to make a proper diagnosis. The document also discusses the classification of primary cicatricial alopecia and the importance of careful evaluation before hair transplantation. The document concludes that a detailed history and physical examination is the most important step toward the diagnosis of alopecia.