Finding a strange bump on your wrist or hand can be worrying, especially when you don’t know where it came from.
The good news is that many wrist and hand lumps are benign (noncancerous). One of the most common causes is a ganglion cyst—a fluid-filled lump that often develops near a joint or tendon.
However, not every lump is the same. Some are related to the skin, others come from bones, joints or tendons, and occasionally a lump needs medical investigation.
Here are five possible causes of a bump on
