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
A 22-year-old man presents with multiple, target-like skin lesions on his right and left upper and lower limbs. He says that the lesions appeared 4 days ago and that, over the last 24 hours, they have extended to his torso. Past medical history is significant for pruritus and pain on the left border of his lower lip 1 week ago, followed by the development of an oral ulcerative lesion. On physical examination, multiple round erythematous papules with a central blister, a pale ring of edema surrounding a dark red inflammatory zone, and an erythematous halo are noted. Mucosal surfaces are free of any ulcerative and exudative lesions. Which of the following statements best explains the pathogenesis underlying this patient’s condition?
assistant
Interferon (IFN) gamma production by CD4+ T cells in the skin