A ganglion is a lump on your wrist, finger or foot. The lump is caused by a bulge in the tendon sheath or capsule surrounding a joint. A tendon sheath is a tube filled with a lubricant. This allows the tendons to slide easily through the tendon sheath every time you tighten or relax your muscles.
Complaints in a ganglion:
You notice a smooth lump on your finger, wrist or foot. It may be there suddenly, or may have developed slowly. More fluid may enter the ganglion, causing the lump to enlarge. Usually, a ganglion does not cause any symptoms. But sometimes it gives a nagging feeling or pain with certain movements. Sometimes the ganglion gets 'in the way', e.g. during certain movements.
A ganglion cannot cause any harm. You can wait and see if it disappears on its own. A ganglion disappears by itself in half of people but can sometimes come back.
Treatment is usually not necessary.
Operation
Sometimes a ganglion continues to cause many symptoms. For example, pain or reduced mobility. An operation may then help. This involves removing the ganglion.