title: Recurrent aphthous stomatitis.
mesh_terms: D006801:Humans; D007978:Levamisole / Q000009:adverse effects / Q000627:therapeutic use; D012008:Recurrence; D013256:Steroids / Q000627:therapeutic use; D013281:Stomatitis, Aphthous / Q000188:drug therapy / Q000209:etiology
chemical_list: D013256:Steroids; D007978:Levamisole