Halo scalp ring: a cause of scarring alopecia.
D000505:Alopecia / Q000209:etiology*; D001720:Birth Injuries / Q000150:complications*; D002921:Cicatrix / Q000209:etiology; D005260:Female; D006801:Humans; D007223:Infant; D012535:Scalp / Q000293:injuries*