<prompt> 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-Behcets syndromeHerpes labialisFixed drug eruptionPemphigus vulgaris  <response>: This patient has : -Recurrent oral ulcersUlcers are small with yellow floor surrounded by an erythematous halo aphthous ulcers.Tender nodules on skin Erythema nodosum.Diagnosis is Behcets syndrome. 