A ganglion is a cyst—a swelling of the lining of a tendon or joint. It is filled with fluid and can develop on any area of the foot, although they are most commonly seen on the top of the foot or on the ankle. Repeated irritation causes ganglions due to weakening of the lining of the tendon or joint. You may be more susceptible to ganglions if you wear boots or other heavy shoes.
Symptoms: Sometimes, there are no noticeable symptoms of ganglions. However, some patients experience swelling, numbness, tingling, and pain. Ganglions also change in size slowly.
Non-Surgical Treatments: Sometimes, ganglions can disappear on their own, but they are likely to recur. Medication can be used to reduce pain and swelling.
Surgery: A surgical approach to ganglions involves removing the cyst and its surrounding tissue. Aspiration can also be used to draw the liquid out of the cyst.