Picture of the month--quiz case. Halo scalp ring.
Anshelevich
Aleksandra
A
Department of Dermatology, The Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, USA.
Osterhoudt
Kevin C
KC
Introcaso
Camille E
CE
Treat
James R
JR
D000505:Alopecia / Q000151:congenital* / Q000175:diagnosis*; D001720:Birth Injuries / Q000175:diagnosis; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012535:Scalp / Q000098:blood supply*