Why Do I Have a Bump on the Top of My Foot? An injury, corns, callouses, cysts, or other health conditions can cause a bump on your foot. They can be painful and make walking difficult, but there are ...

What Is a Subchondral Bone Cyst? It's a fluid-filled sac that forms in one or both of the bones that make up a joint. They're especially common at the knee or hip. The cysts show up just under the ...

DEAR DR. ROACH: I have a marble-sized ganglion cyst on the top/side of my foot, right in front of my ankle bone. It’s not painful in and of itself, but if I put pressure on it, like sitting on the ...

Doctors can drain a ganglion cyst with a needle and syringe. They can also surgically remove the cyst. Although surgery lowers the chance that the cyst will return, it can cause lasting pain and ...