Review Of Hair Casts Vs White Piedra Ideas. But on koh examination, masses of septate hyphae (pigmented in black piedra) are seen. Web young females are at greatest risk of demonstrating hair casts.
Web these two are distinguishable clinically, based on the colour and consistency of nodules, their anatomic localization, and fragility of hair. But on koh examination, masses of septate hyphae (pigmented in black piedra) are seen. They more commonly occur in tropical climates.
