A ganglion cyst is a noncancerous lump filled with a jelly-like fluid. Most are harmless but can be uncomfortable, particularly on the foot. They often disappear on their own, but pain relief, a steroid injection, or surgery may be necessary.

Ganglion cysts develop near joints or tendons, often around the wrist but sometimes on the ankle, foot, or elsewhere.

These cysts tend to disappear on their own, but if a cyst is uncomfortable or painful, a doctor can provide treatment.

Learn about the causes of ganglion cysts, what the treatment entails, and more.

A foot with a ganglion cyst located on the top of the foot.Share on Pinterest

A ganglion cyst is a smooth lump that forms near a joint or tendon.

Research suggests that about 11% of ganglion cysts form on the foot or ankle. Although they can develop anywhere on the foot, they commonly occur on the top.

The size may range from that of a pea to a golf ball. The cyst may appear round and be soft or very hard.

Beneath the skin, a ganglion cyst looks like a balloon on a stalk, and it may move freely beneath the skin if a person pushes it.

Ganglion cysts most commonly affect people ages 15⁠–40 years and are three times more likely to develop in women.

A person with a ganglion cyst on their foot may have:

  • a noticeable lump
  • a tingling or burning sensation if the cyst is touching a nerve
  • pain, possibly a dull ache, if the cyst is pressing against a joint or tendon
  • irritation when wearing shoes, depending on the location of the cyst

The average width of a ganglion cyst on the foot is 2.7 centimeters, or 1.06 inches. When they form on the feet, these cysts cause pain in 67.9% of cases.

Doctors are unsure of the exact underlying causes, but these cysts tend to form in areas of trauma, possibly due to a single event or repeated injuries.

Ganglion cysts seem to form when synovial fluid leaks from a joint or tendon and collects in a sac beneath the skin. Synovial fluid cushions and lubricates joints and tendons during movement.

According to the National Health Service in the United Kingdom, about 50% of ganglion cysts disappear without treatment. However, this can take years, and the cysts may return — the recurrence rate is approximately 15–20%.

If a ganglion cyst is not causing pain or discomfort, the doctor may simply monitor it for changes.

A doctor typically only offers treatment if a cyst is causing pain or mobility issues. In this case, they may recommend:

Aspiration and injection

Aspiration involves draining the cyst of its fluid. The doctor may then inject the cyst with a steroid medication.

More than one session may be necessary, and the cyst may eventually return.


If aspiration and injection is ineffective or inappropriate, the doctor may recommend a procedure to remove the cyst and part of the attached joint capsule or tendon sheath.

However, even after surgery, the ganglion cyst may return.

To ease any pain that a ganglion cyst causes, a person might try:

  • putting ice inside a clean cloth and placing it on the cyst, which also helps ease inflammation
  • limiting movements or activities while waiting for a doctor’s appointment
  • taking over-the-counter pain relief medications

If possible, people should wear shoes that do not irritate the area. Padding may also help ease rubbing and pressure.

What not to do

A traditional home remedy involves hitting a ganglion cyst with a heavy object, usually a book. This is not only ineffective — it can also damage surrounding tissues.

Never try to pop or drain a ganglion cyst at home. Any attempt could lead to infections or other complications.

Consult a doctor if any ganglion cyst is causing pain or discomfort — especially if it limits mobility. A person may also ask about treatment for cosmetic reasons.

A doctor who suspects that a lump on the foot is a ganglion cyst may ask:

  • whether there are any additional symptoms
  • how long the lump has been there
  • if the lump has changed size or shape
  • about the person’s medical history

The doctor may apply pressure to the cyst to check for tenderness. They may also use a small flashlight to see whether light passes through the lump. If it does, this can help diagnose a ganglion cyst.

The doctor may also take some fluid from the cyst for testing.

Below are some common questions about ganglion cysts.

How do you get rid of a ganglion cyst on your foot?

It is possible a ganglion cyst will go away on its own. If not, a person may be able to get rid of a ganglion cyst via a steroid injection or surgery.

What can be mistaken for ganglion cyst?

A ganglion cyst can potentially be mistaken for the following:

  • aneurysmal bone cyst
  • chondroblastoma
  • chondromyxoid fibroma
  • enchondroma
  • giant cell tumor
  • nonossifying fibroma
  • osteoid osteoma
  • osteoblastoma
  • simple bone cyst

What vitamin deficiency causes ganglion cyst?

There is some speculation that a vitamin D or b12 deficiency could be associated with ganglion cysts. However, there is no research to support this theory.

What happens if a ganglion cyst is left untreated?

Without treatment, there is about a 50% chance of a ganglion cyst disappearing on its own.

Sometimes, a ganglion cyst may not go away and may cause pain. In this case, a person should seek advice from a doctor.

Ganglion cysts are benign lumps filled with a jelly-like fluid. They may disappear without treatment.

These cysts form near joints or tendons and can cause discomfort, particularly when they develop on the foot or ankle.

If a ganglion cyst causes any pain, discomfort, or limitation of movement, a doctor may recommend a procedure to drain or remove the cyst. However, these cysts can return, even with treatment.

Never try to pop, drain, or remove a ganglion cyst at home.