This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
[{'content': 'A patient comes to you after visiting the hair dresser. What will you do to confirm the diagnosis: \nSelect and explain. \nA. VDRL, B. Allergy Test, C. S IgE, D. Patch Test', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Patch TestPatient is having swelling of face most probably due to allergy to some cosmetic product. Patch test will identify the cause of allergic reaction.', 'role': 'assistant'}]