Medically reviewed by Lauren Schlanger, MD Key Takeaways A ganglion cyst is the most common cause of a lump on your hand or wrist and often feels round or oval. A carpal boss is a hard, bone-like lump ...

A pea-sized lump in your neck is usually a swollen lymph node. It’s often a sign you’re fighting an infection or a result of an insect bite or sting. The appearance of a pea-sized lump in your neck ...