15 citations
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December 2016 in “Journal of The American Academy of Dermatology” Exclamation mark hairs suggest early scalp disease, while white dots indicate it's chronic.
April 2024 in “Journal of cosmetic dermatology” Children with alopecia areata have more exclamation mark hairs and fewer yellow dots than adults.
33 citations
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September 2012 in “Australasian Journal of Dermatology” Chemotherapy can cause hair changes similar to alopecia areata, which might lead to misdiagnosis.
143 citations
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November 2008 in “Journal of The American Academy of Dermatology” Comma hairs are a specific sign of tinea capitis when viewed with videodermatoscopy.
56 citations
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June 2010 in “Clinical and experimental dermatology” Coudability hairs are useful markers for alopecia areata activity.