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: Dental
[{'content': "A patient gives a history of recurrent oral ulcers. The ulcers are small with a yellow-floor surrounded by an erythematous halo on the lips. He also has multiple, tender nodules on the skin. He most likely has- \nSelect and explain. \nA. Behcet's syndrome, B. Herpes labialis, C. Fixed drug eruption, D. pemphigus vulgaris", 'role': 'user'}, {'content': "Answer: A \nExplanation: behctes disease- Chronic relapsing multisystem disease characterised by neutrophilic vascular reaction or vasculitis with progressing course International criteria to diagnose behcets disease Symptom points Ocular lesions recurrent 2 Recurrent aphthous ulcers 2 Recurrent genital ulcers 2 Recurrent skin lesions ( erythemanododsum, papular, pustular,vasculitic) 1 Central nervous system 1 Vascular manifestations 1 Positive patterns test 1 Score >4 is diagnostic of Behcet's disease Fitzpatrick textbook of dermatology page 2568", 'role': 'assistant'}]