Quick Summary
A ganglion cyst is a harmless, fluid-filled lump that forms near a joint or tendon, most often on the back of the wrist. Many settle on their own over time — research reports up to 58% resolve spontaneously — so watchful waiting is usually the sensible first step.
Our physiotherapists cannot make the cyst itself disappear, but we can help you manage discomfort, restore wrist movement and strength, and guide you on when onward referral for aspiration or surgery may be worthwhile.
What Is a Ganglion Cyst?
A ganglion cyst is the most common soft-tissue swelling of the hand and wrist, accounting for 50–70% of all such lumps. It is a benign (non-cancerous) sac filled with a thick, jelly-like fluid similar to the natural lubricating fluid inside a joint. The cyst connects to an underlying joint capsule or tendon sheath through a narrow stalk.
The most widely accepted explanation is a “one-way valve” mechanism: repetitive stress irritates the joint capsule, and fluid is driven from the joint into the cyst but cannot easily flow back — so the lump gradually enlarges and can visibly fluctuate in size from week to week.
The most common site is the back of the wrist (around 60–70% of cases), followed by the palm side of the wrist, the base of a finger, and the end joint of a finger, where cysts are linked to early osteoarthritis. Ganglion cysts are common — they most often affect adults aged 20–40 and are around three times more common in women — and they are benign: they do not spread, and serious problems from one are very rare.
Research evidence shows that up to 58% of ganglion cysts resolve without any treatment over time (Suen et al., ISRN Orthopedics, 2013), which is why NHS and specialist guidance recommends watchful waiting as the usual first approach.
Do You Experience These Symptoms?
✓ A smooth, round, firm lump near a wrist or hand joint, from pea-sized to a few centimetres across
✓ Fluctuation in size — the lump often grows with wrist use and may shrink with rest
✓ Discomfort or aching, particularly with wrist extension, gripping or weight-bearing through the hand
✓ A lump that is frequently painless and may be the only symptom you notice
✓ A lump that “glows” when a small light is shone through it, because it is filled with clear fluid
✓ Occasionally, tingling, numbness or weakness if the cyst presses on a nearby nerve
✓ Cosmetic concern or worry about what the lump is — a very common reason people seek assessment
These symptoms can be treated.
The sooner you begin, the better your chances of a smoother recovery.
What Causes a Ganglion Cyst?
• Joint or tendon irritation
Ganglion cysts most often arise spontaneously from the joint capsule or tendon sheath. Mechanical stress stimulates fluid production, which collects to form the cyst, and there is often no identifiable trigger at all.
• Repetitive stress and loading
Repeated wrist movement and load is an associated risk factor. Gymnasts and people doing weight-bearing wrist activities are more prone, likely due to repetitive stress through the wrist joint.
• Osteoarthritis
Cysts at the end joint of a finger (mucous cysts) are linked to early osteoarthritis of that joint. Here the underlying arthritis, not the cyst, is often the real source of symptoms.
• Age and sex
Ganglion cysts most commonly affect adults aged 20–40 and are around three times more common in women than in men. Mucous cysts tend to occur later, in people aged 40–70.
• Previous injury
Occasionally a cyst follows an injury to the wrist or hand, which may cause fluid to leak from a joint or tendon sheath. Most, however, appear without any preceding trauma.
How We Treat Ganglion Cysts at J&J Therapy
Hands-On Manual Therapy
Hands-on assessment and treatment from our HCPC-registered physiotherapists to ease discomfort, address associated wrist stiffness and soft-tissue restriction, and guide activity modification. We are honest that manual therapy does not remove the cyst itself — and we advise strongly against trying to burst it — but it supports comfortable movement while many cysts settle naturally, and we can advise when referral for aspiration or surgery may be worthwhile.
Shockwave Therapy*
Swiss Storz Medical MASTERPULS may complement your manual therapy and exercise programme when your physiotherapist identifies specific indications during assessment. Non-invasive, evidence-based.
Targeted Exercise Programme
A targeted programme of gentle wrist mobility work, progressive grip and wrist strengthening, and practical load management. Exercise cannot dissolve the cyst, but it helps keep the wrist moving, comfortable and strong — and short-term use of a wrist support can ease pain during aggravating activities.
When to Seek Urgent Medical Help
While most symptoms are not serious, urgent medical attention is required if you experience any of the following:
A lump that is hard, fixed, irregular or rapidly growing — this needs urgent assessment to exclude other causes
Numbness, pins and needles, or weakness in the hand, which can indicate pressure on a nerve
A palm-side wrist lump that is pulsating, or any signs of infection such as hot, very painful or red skin (redness may be harder to see on brown and black skin)
Severe pain, particularly overnight pain, or pain not clearly related to pressure or activity
FAQs About Ganglion Cysts
Will my ganglion cyst go away on its own?
Often, yes. Research reports that up to 58% of ganglion cysts resolve without any treatment over time, and watchful waiting is usually the recommended first approach. Resolution can, however, take months to a couple of years.
Is a ganglion cyst cancerous?
Almost never. Ganglion cysts are benign and do not spread or turn into cancer. That said, any lump that is hard, fixed, irregular or rapidly enlarging should be checked promptly to exclude other causes.
Should I hit it with a book to burst it?
No. This traditional remedy is not recommended — you risk injuring the structures around the cyst, and the NHS specifically advises against trying to burst or pop a ganglion because of the risk of infection and skin damage.
Does draining (aspiration) or surgery work better?
Aspiration temporarily reduces the lump but recurrence is high — around 59% on average. Surgical excision has a much lower recurrence rate (roughly 6–21% depending on technique) but more complications and a longer recovery, so it is generally reserved for persistent pain, functional limitation or nerve compression. We can help you weigh up these options and advise on referral.
Can shockwave therapy treat a ganglion cyst?
Shockwave is not a first-line treatment for ganglion cysts, and the evidence for it in this specific condition is very limited. We would only consider it as a possible complement to your manual therapy and exercise programme if your physiotherapist identifies specific indications during your assessment, and we will always be open with you about the limited evidence.
This page is for general information only and does not replace professional medical advice.
Reviewed by Lavya Arigalayan, MSc, HCPC Registered Physiotherapist.
Last reviewed:
2026년 8월 20일