Ms Lie is a fourth-year medical student at Johns Hopkins University School of Medicine, Baltimore, Maryland.
Stubborn ring of rash around a boy's mouth
October 1st 2017The mother of a healthy 11-year-old boy brings him to the office for help to clear a rash that has persisted around his mouth for 3 months. Although the boy rarely licks his lips, he does not use lip products and has not changed his dental products.