Congenital Triangular Alopecia (Brauer Nevus)

The document reports on Congenital Triangular Alopecia (CTA), also known as Brauer Nevus, which is a nonprogressive, noncicatricial form of hair loss that typically presents as unilateral or less frequently bilateral patches of alopecia in the frontotemporal region of children around 3 to 5 years of age. The study reviewed 6200 patients and found 7 cases of CTA, suggesting a frequency of 0.11% and indicating that the condition might be more common than previously thought. The paper describes the clinical presentation of CTA, its differentiation from alopecia areata and other forms of localized alopecia, and notes that while males may not require treatment due to the potential development of androgenic alopecia, surgical treatment in females can yield good cosmetic results. The document includes case reports of patients with CTA, detailing their history, presentation, and treatment outcomes.