[1]: 768 [2] Pili bifurcati is defined by uneven bifurcation of the hair shaft.

[4] The etiology of pili bifurcati is a temporary duplication of the papilla tip that occurs during the anagen phase.

This temporary production results in two full shafts that emerge from a single pilary canal within the same follicular matrix.

Patients with protein deficits can have hypopigmentation and telogen effluvium.

Hair shafts studied under light microscopy reveals the distinctive bifurcations.