Researchers at the University of Cincinnati received a patent for the treatment of OCD with tramadol. However, as far as I know it is not yet an accepted first line treatment. It is also potentially useful for the treatment of anxiety. Tramadol inhibits serotonin and noradrenaline reuptake. This may account for it's potential value in treating anxiety and mood disorders. However, there are many drugs for the treatment of OCD and anxiety that are probably more effective. I believe that, at this point, tramadol should be used when nothing else works and there are also some pain issues.
D.