Identification of Trichoscopic Features of Allergic Scalp Contact Dermatitis: A Pilot Study of a Single Center

June 2023 in “ Italian journal of dermatology and venereology ”

Michela Starace, Francesca Bruni, M Marcondes, Aurora Alessandrini, Bianca Maria Piraccini

allergic scalp contact dermatitis topical minoxidil p-phenylenediamine trichoscopy erythema white scales arborizing vessels simple red loops ASCD minoxidil PFD

TLDR Trichoscopy effectively diagnoses allergic scalp contact dermatitis.

The pilot study "The identification of trichoscopic features of allergic scalp contact dermatitis: a pilot-study of a single center" conducted a retrospective chart review of 12 patients diagnosed with allergic scalp contact dermatitis (ASCD) from January 2020 to September 2021. The study found that the main allergens causing ASCD were topical minoxidil (58.33%) and p-phenylenediamine (PFD) (33.33%). Trichoscopy, a method for investigating scalp diseases, revealed specific features associated with ASCD, including erythema (100%), white scales (100%), arborizing vessels (91.2%), and simple red loops (91.2%). The study concluded that trichoscopy is a useful tool for diagnosing ASCD.

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Identification of Trichoscopic Features of Allergic Scalp Contact Dermatitis: A Pilot Study of a Single Center

Research cited in this study

research Scalp Itch: A Systematic Review

research An Unusual Case of Contact Dermatitis

research Scalp Dermoscopy or Trichoscopy

research Scalp Psoriasiform Contact Dermatitis with Acute Telogen Effluvium Due to Topical Minoxidil Treatment

research Dermoscopic Findings in Scalp Psoriasis and Seborrheic Dermatitis: Two New Signs; Signet Ring Vessel and Hidden Hair

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