Ganglion Cyst

Overview

A ganglion cyst is a smooth, fluid-filled lump that most often appears near joints or tendons, usually on the wrist, hand, or fingers. It is not cancer and is usually harmless.

Yes. Ganglion cysts are the most frequently seen lump in the hand and wrist, and most people who get them never even notice symptoms.

They can occur at any age, but they are most often found in people between 20 and 40 years old. Women are about three times more likely to get them than men. People with arthritis or a previous joint injury are also at higher risk.

Symptoms

Common symptoms

• A visible, smooth bump — often under the skin of the wrist, hand, or fingers
• The lump may feel soft or firm, and it is usually not tender
• Pain when you use the joint — for example, when bending the wrist
• A feeling of weakness in the hand or fingers
• Tingling or numbness if the cyst presses on a nearby nerve

Symptoms in children

• Ganglion cysts in children often appear as a small, painless bump on the wrist or hand.
• Children may notice the lump more than adults, but it rarely causes pain or limits movement.
• Most childhood ganglion cysts disappear on their own within a few months.

Symptoms in older adults

• The cyst may be harder and less movable because it is often linked to arthritis in the nearby joint.
• Older adults may feel more stiffness or discomfort in the affected joint.
• These cysts are less likely to resolve on their own and may need treatment if they cause pain.

Causes

Main causes

• The exact cause is unknown, but a ganglion cyst is thought to be a small tear or bulge in the tissue that lines a joint or tendon, letting fluid leak out and form a sac.
• The fluid is similar to joint fluid, and it thickens into a jelly-like substance inside the cyst.
• It is not a cancer and it is not caused by any type of tumor or infection.

Risk factors

• Being a woman — women get these cysts more often than men
• Being between 20 and 40 years old
• Having osteoarthritis, especially in the fingers
• A previous injury to the joint or tendon in the area
• Doing repetitive activities that stress the wrist or hand, such as typing, gymnastics, or weightlifting

When to see a doctor

See a doctor urgently if:

• If you have sudden, severe pain or rapid swelling
• If you notice weakness, numbness, or trouble moving the joint
• If there are signs of infection — redness, warmth, or fever

Book a routine appointment if:

• See a doctor whenever you notice a new lump, so you can confirm that it is harmless.
• Make an appointment if the lump is painful or makes everyday tasks difficult.
• Ask for a check-up if the cyst grows noticeably over time.

Diagnosis

A doctor can usually diagnose a ganglion cyst by looking at it and pressing on it. They may shine a small light through the lump — if it is filled with clear fluid, the light will pass through, which helps confirm the diagnosis.

Tests that may be done

• Ultrasound — a scan that uses sound waves to show the cyst and its contents
• Magnetic resonance imaging (MRI) — a detailed scan used if the cyst is deep or hard to feel, or if the doctor wants to rule out other conditions
• X-ray — not needed for the cyst itself, but may be done to check for arthritis or bone problems

What to expect at your appointment

You will be asked about your history, how long you have had the lump, and whether it hurts. The doctor may press on the lump, ask you to move your wrist or ankle, and shine a light through it. Some people are referred to a physiotherapist or hand specialist if symptoms persist.

Treatment

Treatment depends on whether the cyst causes pain, discomfort, or interference with movement. Many cysts can be watched and left alone. When treatment is needed, it usually involves draining the cyst with a needle or removing it with a small operation.

Self-care at home

• Rest the joint, especially if activity makes the pain worse.
• A rigid or splinted support can take pressure off the area while it heals.
• Warm compresses may soothe a tender cyst.
• Avoid pressing on, hitting, or 'popping' the cyst with a book or object — this is not a safe treatment.

Medical treatments

A doctor may drain the cyst using a fine needle (aspiration), which removes the fluid and collapses the sac. In some cases, they may also inject an anti-inflammatory medication into the area to reduce swelling. Draining works for many people, but the cyst may refill. The decision about any procedure depends on your symptoms and your doctor's advice.

When is surgery considered?

Surgery is usually considered only if the cyst is painful, growing, or interfering with movement, and if simpler treatments have not helped. The operation is a small outpatient procedure to remove the cyst and the stalk that connects it to the joint or tendon. Surgery has a good success rate, but the cyst can sometimes come back.

Living with this condition

For most people, a ganglion cyst does not affect daily life. You can continue normal activities, but you may need to take breaks or wear a brace if you have discomfort. Listen to your body and avoid repetitive movements that aggravate the lump.

Lifestyle tips

• Use a wrist support when doing activities that strain the wrist, such as typing or lifting.
• Take short rest breaks during long periods of repetitive hand or foot movements.
• If you play sports, talk to a physiotherapist about a padded support for the affected area.

Diet and exercise

There is no need for a special diet, but eating a balanced diet and staying active helps keep your joints and tendons healthy. Gentle exercises that keep the wrist and hand moving normally can help maintain flexibility. If exercise causes pain, check with your doctor or a physiotherapist first.

Mental health and emotional wellbeing

A visible lump can cause worry or embarrassment, especially if it appears on the hand. It is natural to feel concerned. Remember that a ganglion cyst is benign and very common. If the appearance bothers you, talking to a doctor about the treatment options can ease anxiety.

Prevention

There is no guaranteed way to prevent a ganglion cyst, because the cause is not fully understood. However, reducing repetitive strain on your joints and treating any joint or tendon injuries promptly may lower the chance of developing one.

Complications

If left untreated

• Most untreated cysts cause no harm and may go away on their own.
• A cyst can press on a nerve, causing pain, numbness, or weakness in the hand or foot.
• In rare cases, the cyst can rupture, which may cause temporary bruising, swelling, and a feeling of joint weakness. This is not dangerous and usually resolves.

Long-term outlook

The outlook for a ganglion cyst is very good. Many cysts disappear without treatment, and most people can continue with their usual activities. Even when treatment is needed, simple office procedures or minor surgery are safe and effective. The chance of the cyst returning is around half after draining, but lower after surgery. You can be reassured that this is a benign condition.

Find support

International organisations

• NHS (UK) ↗

Local organisations

• Your GP or practice nurse · Your area

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.