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 ...

A lump on the finger knuckle joint can happen for many reasons, ranging from an inflammatory condition to an infection. In rare cases, a bump or lump on the finger knuckle joint can be due to a tumor.

Bumps can appear on the elbow for various reasons, such as skin irritation, arthritis, eczema, or an injury. Bumps on the elbows range in size from small to large, may be hard or soft, and may or may ...