Challenging diagnosis of peripillous sheaths.
Peripillous sheaths, or hair casts, are asymptomatic, white, cylindrical concretions that encircle the hair without adhering to it. They are infrequently documented in the literature, are often misdiagnosed, and generate avoidable apprehension and expense for parents and caregivers. Dermoscopy is the standard for a rapid, noninvasive, cost-effective diagnosis. We describe a case of peripillous sheaths presenting in a boy.
Dermatologic Clinic, Policlinico A. Gemelli, Università Cattolica del Sacro Cuore, Rome, Italy.
Maria
M
Gnarra
Pierluigi
P
Saraceni
Alfredo
A
Rossi
Amera
A
Murabit
Emanuela
E
Caradonna
Luca
L
Fania
Claudio
C
Feliciani
D002648:Child; D046169:Dermoscopy; D003937:Diagnosis, Differential; D006197:Hair / Q000473:pathology*; D006201:Hair Diseases / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D008297:Male; D014212:Tretinoin / Q000627:therapeutic use
D014212:Tretinoin