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    Glossary Exclamation Point Hairs

    short, broken hairs tapering at the base, indicating alopecia areata

    Exclamation point hairs are a characteristic sign of alopecia areata, an autoimmune condition that causes hair loss. These hairs are broken, short, and taper at the base, resembling an exclamation mark. They are often found at the edges of bald patches and indicate active disease progression.

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      Office Diagnosis of Hair Shaft Defects

      research Office Diagnosis of Hair Shaft Defects

      33 citations , March 2006 in “Seminars in cutaneous medicine and surgery”
      This article illustrates various hair shaft defects and suggests that dermatologists can diagnose most of them using light microscopy and polarization without needing advanced imaging techniques.
      Trichoscopic Findings of Hair Loss in Koreans

      research Trichoscopic Findings of Hair Loss in Koreans

      16 citations , January 2015 in “Annals of Dermatology”
      In this study, trichoscopic features aiding differential diagnosis of alopecia in Korean patients were found to be similar to those in Caucasians, but pigment pattern frequencies differed due to racial characteristics.
      A Patient with Diffuse Hair Loss

      research A patient with diffuse hair loss

      January 2015 in “Indian Dermatology Online Journal”
      This diagnostic discussion reports that diffuse alopecia areata was identified in a patient with diffuse hair loss, based on specific histopathological features observed in a biopsy.
      Alopecia Areata: Overview and Insights from January 2018

      research Alopecia areata

      290 citations , December 2017 in “Journal of The American Academy of Dermatology”
      This article reviews the epidemiology, clinical evaluation, and pathogenesis of alopecia areata and highlights recent advancements, but it does not report new clinical findings.

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      learn Osteopontin

      signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss