Case for diagnosis. Alopecia areata and congenital triangular alopecia.
A 6 year-old patient began to experience localized hairloss in the right temporal region three years ago. During the first appointment, diagnoses of alopecia areata and congenital triangular alopecia were made. After one year, there was no change. Upon dermatological examination, non-scarring alopecia was noted in the right temporal region, revealing extremely fine and fair hair follicles. A dermoscopy revealed only thin vellus-type hairs. Congenital triangular alopecia is a condition commonly confused with alopecia areata and is thus underdiagnosed. However, well-established clinical parameters and dermoscopic criteria can be used to distinguish skin diseases that affect hair and define the diagnosis.
Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brazil.
Lorena Cassia de Carvalho
LC
Oliveira
Universidade Federal of Goiás, Goiânia, GO, Brazil.
Amanda Rodrigues
AR
Miranda
Universidade Federal of Goiás, Goiânia, GO, Brazil.
Sebastião Alves
SA
Pinto
Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brazil.
Mayra
M
Ianhez
D000505:Alopecia / Q000175:diagnosis*; D000506:Alopecia Areata / Q000175:diagnosis*; D002648:Child; D046169:Dermoscopy / Q000379:methods*; D003937:Diagnosis, Differential; D040181:Genetic Diseases, X-Linked / Q000175:diagnosis*; D006801:Humans; D008297:Male