Atypical Congenital Triangular Alopecia (Brauer Nevus): Case Report and Literature Review in Occipital and Mid-Frontal Localizations
January 2021
in “
Skin appendage disorders
”
TLDR The report concludes that atypical Brauer nevus is more common in males, present at birth, and often misdiagnosed due to its unusual scalp locations.
The document is a case report and literature review on atypical Brauer nevus, focusing on the less common occipital and mid-frontal scalp locations. It includes a total of 18 cases, with 4 new ones added to the previously published 9. The study found that these atypical presentations are more common in males and are often present at birth. Trichoscopic findings are similar to classical congenital triangular alopecia, with vellus hairs present, but white hairs are typically absent in mid-frontal cases. Histopathology shows follicular hypoplasia with a normal count but reduced size of follicles, consistent with classical presentations. The document highlights the need for awareness of these atypical presentations to prevent misdiagnosis, providing valuable information on their clinical and trichoscopic features.
