Q. A 2-month-old girl has been brought to the physician’s office by her mother for a rash over the forehead for 2 weeks. She says that the child is scratching over the rash often and is otherwise well with regular feeds and undisturbed sleep. The birth history shows an uneventful full-term normal vaginal delivery and the child is up to date for vaccination. Physical examination shows multiple small, erythematous, scaly patches on the forehead extending onto retro auricular regions and the scalp shows a few yellowish greasy adherent crusty lesions over the vertex. The rest of the examination is unremarkable. Which of the following is the initial best next step in this patient’s management?