A patient gives hideg recurrent oral ulcers. The ulcers are small with a yellow floor surrounded by an erythematous halo on lips. He also has multiple, tender nodules on shin. The probable diagnosis is

B i.e. Bechet's syndrome Recurrent oral apthous ulcers (oral ulcers with yellow floor surrounded by erythematous halo) with erythema nodosum like nodules (multiple, tender nodules on shin) suggest the diagnois of Behcet's syndrome.