system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
An otherwise healthy 27-year-old man presents to his dermatologist because of a rash over his knees. The rash has been present for 5 weeks and is moderately itchy. Physical examination reveals erythematous plaques covered with silvery scales over the extensor surface of the knees as shown in the image. Which of the following is the best initial step in the management of this patient’s condition?
 
assistant
Topical corticosteroids and/or topical vitamin D analog