Q. A 35-year-old woman presents to your clinic with a known history of psoriasis for a follow-up. She reports that she recently developed a new flare of psoriatic lesions along the site of a minor cut on her right arm. Her vitals are stable. On examination, well-defined, erythematous plaques covered with silvery scales are observed on her right arm. Based on the history, how do you explain her condition?