Follicular mucinosis with novel dermoscopic finding: the toothpaste sign

We describe a case of follicular mucinosis presenting with patchy alopecia affecting the eyebrows. On dermoscopy, white gelatinous material (presumed to be mucin) was visible along the hair shafts of the eyebrow lesions. We propose to call this novel dermoscopic finding the ‘toothpaste sign’.

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Bibliographic Details
Published inClinical and experimental dermatology Vol. 47; no. 5; pp. 969 - 970
Main Authors Mumford, Blake Phillip, Ryan, Andrew, Chong, Alvin H., Lasocki, Anita
Format Journal Article
LanguageEnglish
Published England Oxford University Press 01.05.2022
Subjects
Alopecia
Alopecia - pathology
Alopecia Areata
Dentifrices
Dermoscopy
Hair - pathology
Humans
Mucin
Mucinosis, Follicular - diagnosis
Toothpaste
Toothpastes
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Summary:We describe a case of follicular mucinosis presenting with patchy alopecia affecting the eyebrows. On dermoscopy, white gelatinous material (presumed to be mucin) was visible along the hair shafts of the eyebrow lesions. We propose to call this novel dermoscopic finding the ‘toothpaste sign’.
Bibliography:Conflict of interest: the authors declare that they have no conflicts of interest.
ISSN:0307-6938
1365-2230
DOI:10.1111/ced.15083