Trichorrhexis Nodosa – one or more swellings which appear along the axes of hairshafts which show as highlighted spots under photomicrography.
Photomicrograph x 50 © B J Stevens
Breakage occurs leaving the ends frayed (almost brush-like).
The condition can result from: Excessive heat,
Exposure to hydrogen peroxide, Hair dyes, Alkalis,
© 2009 THE TRICHOLOGICAL SOCIETY