I had the same issue when playing lots of basketball in college. After seeing a few doctors, they all suggested to change my diet (no sugars, fried/frozen food, drugs/alcohol).
Everyday religiously for two months, I soaked them in viniger for 15 mins first thing in the morning and last thing before sleep. In combination with 3 cups of pau d'arco tea brewed using the natural bark from South America using reverse osmosis or distilled water a day elimated it within 2 months flat.
You can typically find the bark at your local health store. PM if you need any help. Good luck bro.