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Updated: Feb 16, 2026

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
Published on: March 9, 2015
"i hair": A prognostic marker in alopecia areata & trichotillomania
Subrata Malakar1, Purva Ranjit Mehta1
1Department of Dermatology, Rita Skin Foundation, Kolkata, West Bengal, India.
Abstract:
Trichoscopy as an investigative tool is revolutionizing the diagnosis of hair disorders. The use of a trichoscope has unveiled a plethora of signs which not only helps in decoding the underlying tricoscopic condition but also acts as prognostic markers. Herein, we present a new trichoscopic sign, "i hair" in alopecia areata and trichotillomania. "i hair" are short hairs with an accentuated distal end. There may be a thin hypopigmented shaft just beneath the darker distal end, thus making them resemble the alphabet "i."
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