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This study found that exclamation mark hairs are not exclusive to alopecia areata and can also appear in trichotillomania, challenging their status as a definitive diagnostic marker.

In this study, researchers used atomic force microscopy to capture and analyze morphological changes in the surface of healthy hair, identifying features such as pitting and rod-shaped macro-fibrillar elements, which could inform future research on hair conditions and care.

Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.

This report presents a rare case of short anagen syndrome in a 38-year-old African American woman, expanding the documented demographic beyond previously reported Caucasian individuals with fine blond hair.

The cause of alopecia areata was unknown, and while various treatments existed, no best treatment was agreed upon.