For years now I've had a problem with my shins. im not sure if its shin splints or what it is. i can walk for aslong as i want at a pace but if i try to up the pace by just a little i get a soft lump on my shin a little more than half way between my knee and ancle about an inch in diameter (the same happens both legs but the right is always worse) and the pain in really bad after just about 60 seconds walking fast. and after about 2 minutes cant really walk properly because the ancles have kind of seesed up. i dont think its shin splints because i thought to get shin splints you had to do a massive amount of walkin/running but this is happening after just a few seconds of walking if i walk fast enough. does anyone know what the problem is, and how to solve the problem?