Lithium Iontophoresis cause cause the clearing of gout tophi from the soft tissues or joint. Try lithium carbonate salt for iontophoresis or check the availability of other salts containing lithium.
Inflammation in gout can also be controlled by the use of modalities or physical agents. In acute conditions the principle of RICE (Rest, Ice, compression, elevation) can be used. When the acute phase passes, try the deep heating modalities which are SWD, microwave diathermy and ultrasound. As we know according to fundamental principles of physics that precipetate dissolves into the blood stream on rising the tissue temperature while there is tendency to reform the precipetate on cooling of the tissue.
Medical management should never be ignored as this is also necessary to control the uric acid in the blood.