My right ankle i had sprained years back and now for several months it has pain to it, hurts to touch and walk, with burning sensation... any ideas on why? i take inflammation medicine and ice it for 20 minutes up to an hour. but it still hurts.

Your old injury: May or may not have anything to do with it. See a podiatrist or orthopedist for clinical evaluation.

You need : To be evaluated. X-ray or MRI may be necessary to find out why you are having pain.

Have it evaluated.: Your pain could be as a result of many different things. A thorough history and physical exam and possibly some laboratory and radiology exams are needed to determine the exact cause. Causes of pain may include: trauma (fracture, sprain, arthritis), or due to a musculoskeletal or a biomechanical abnormality.