A carpal boss is a firm lump on the back of your hand, near your wrist. While it usually doesn’t cause any symptoms, some people notice pain and a decreased range of motion. We’ll go over why ...

A carpal boss can be mistaken for a ganglion cyst or a tumor, and vice versa. If you develop a lump on your wrist and you’re not sure what it is, you should talk to your doctor about it.