Minoxidil-Induced Trichostasis Spinulosa of Terminal Hair

    December 2010 in “ Archives of Dermatology ”
    Alexander A. Navarini, Maya Ziegler, Isabel Kolm, Lisa Weibel, Clarissa Huber, Ralph M. Trüeb
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    TLDR Minoxidil use can cause trichostasis spinulosa in long-term hair loss patients.
    The article reports a case of trichostasis spinulosa of the terminal hair type in a 35-year-old woman with female pattern hair loss who had been using topical minoxidil for 13 years. Trichostasis spinulosa is a follicular disorder resulting from the retention of numerous hairs surrounded by a keratinous sheath in a dilated follicle. The article emphasizes the importance of recognizing this disorder in patients with hair loss who have been using minoxidil for a long time. The case is unique because it was induced by minoxidil, a trichotrophic agent that transforms vellus hairs to terminal hairs.
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