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Health condition · Clinically reviewed

Ganglion, a benign joint swelling with a clear treatment ladder.

Firm, rubbery and often on the back of the wrist. Ganglia are non-cancerous, frequently self-resolving, and treatable with observation, aspiration or excision.

Also known as a ganglion cyst or ganglion cysts - the same condition described from different search terms.

Jump to treatment
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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against BSSH, BOFAS and peer-reviewed hand and foot surgical sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK practice on observation, aspiration and arthroscopic or open excision.

Key facts

Ganglion at a glance.

A benign, fluid-filled swelling that arises from a joint capsule or tendon sheath. Common, treatable, and often self-resolving.

  • What it is

    A benign fluid-filled swelling arising from a joint capsule or tendon sheath - not a true cyst, because it has no epithelial lining. It holds gelatinous synovial-like fluid.

  • Where it happens

    Most often the wrist (dorsal and volar), also the fingers, flexor tendon sheath, dorsal foot, ankle and behind the knee (see our Baker cyst guide).

  • Who gets them

    Women outnumber men roughly 3:1, with a peak between the ages of 20 and 40. Repetitive wrist use and joint degeneration are common triggers.

  • Same page?

    Yes - this is our SEO-friendly overview. For the same clinical content see also our ganglion cyst and ganglion cysts guides.

  • Behaviour

    Often waxing and waning in size, sometimes disappearing spontaneously. Up to half resolve without any active treatment.

  • Treatment ladder

    Observation first, then aspiration, then surgical excision (open or arthroscopic) if symptoms persist or the swelling returns.

Why this guide matters

A rubbery lump on the wrist is rarely dangerous.

Ganglia are the most common soft-tissue swelling of the wrist and hand. Knowing what they are - and are not - takes most of the worry out of the picture.

  • Benign, not a tumour

    Ganglia are non-cancerous swellings from a joint or tendon sheath - not solid tumours. Ultrasound confirms this quickly when there is any doubt.

  • Often self-limiting

    Up to half resolve without any treatment. If it does not hurt and does not affect grip, observation is a legitimate first step.

  • Treated in a clear ladder

    Reassurance and activity change first, then aspiration, then excision - each step reduces symptoms and recurrence progressively.

How the diagnosis is made

From a new lump to a confident plan.

The steps a UK GP or hand surgeon will normally follow, in order, so you know what to expect and why.

  1. 01

    Assessing

    History and lump timeline

    When it appeared, whether it changes size, links to activity or trauma, and any pain, weakness or numbness.

  2. 02

    Assessing

    Clinical examination

    Site, size, consistency (firm and rubbery), mobility, tenderness and whether the swelling transilluminates - a classic ganglion feature.

  3. 03

    Assessing

    Functional impact

    Grip strength, wrist range of movement, and whether the lump interferes with work, sport or day-to-day tasks.

  4. 04

    Confirming

    Ultrasound scan

    A quick, radiation-free way to confirm a cystic fluid-filled lesion and rule out a solid soft-tissue tumour or vascular lesion.

  5. 05

    Confirming

    MRI (selective)

    Reserved for occult ganglia, deep or intraosseous lesions, or when a specialist wants a detailed map before surgery.

  6. 06

    Planning

    Specialist referral

    Hand or foot surgeon input for painful, recurrent, atypical or nerve-compressing swellings and for surgical planning.

  7. 07

    Planning

    Shared decision on treatment

    Weighing observation, aspiration and excision against your symptoms, hand demands and personal preferences.

Typical timeline: confident diagnosis in one clinic visit, imaging within days when needed.

Symptoms

What a ganglion actually looks like.

A firm rubbery lump, often near a joint, that changes size with use. Some cause pain or weakness, others none at all.

  • Firm rubbery lump

    A smooth, well-defined swelling near a joint or tendon sheath - most often on the back of the wrist.

  • Size that varies

    Ganglia often wax and wane over weeks and months - larger with use, smaller with rest.

  • Aches with activity

    Discomfort with repetitive wrist or hand use, gripping, weight-bearing on the hand or long typing sessions.

  • Reduced grip or weakness

    A dorsal wrist ganglion can push on nearby structures and make gripping or push-ups feel weak.

  • Volar wrist swelling

    A ganglion on the palm side of the wrist can sit next to the radial artery - important for planning aspiration or surgery.

  • Digital myxoid cyst

    A small ganglion over the DIP joint of a finger, often linked to underlying osteoarthritis, sometimes ridging the nail.

  • Seed ganglion

    A tiny, pea-sized swelling on the flexor tendon sheath in the palm - tender when gripping a steering wheel or handle.

  • Red flag - nerve symptoms

    Pins and needles, numbness or worsening weakness may signal nerve compression (Guyon canal or carpal tunnel) and warrants review.

Treatment

How ganglia are treated in the UK.

A stepped approach - observation first, then aspiration, then surgical excision if needed.

  • Observation and reassurance

    For painless ganglia that are not troubling you - up to half resolve on their own within a year or two. A watchful eye is a legitimate plan.

  • Activity adjustment

    Reduce repetitive wrist loading, use ergonomic keyboards and mice, and pace gripping tasks. Simple tweaks often calm symptoms.

  • Splint or brace

    A soft wrist splint for a short period can settle activity-related pain while a decision on further treatment is made.

  • Needle aspiration

    An in-clinic procedure to drain the gelatinous fluid, sometimes with a steroid. Recurrence around 50 to 70 per cent - see our ganglion aspiration guide.

  • Open surgical excision

    Removes the ganglion and its stalk from the underlying joint capsule. Recurrence around 5 to 10 per cent - see our ganglion excision guide.

  • Arthroscopic excision

    Keyhole removal of dorsal wrist ganglia through small portals. Selective use by hand surgeons with the right kit and experience.

  • Steroid injection (selective)

    A cortisone injection may be added at aspiration or for a painful digital cyst - your specialist will decide if it fits your case.

  • Hand therapy

    Physiotherapy to restore grip, wrist range and confidence after aspiration or surgery, and to build sustainable habits.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or hand specialist knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • British Society for Surgery of the Hand (BSSH). Patient information on ganglion cysts of the wrist and hand.

  • British Orthopaedic Foot and Ankle Society (BOFAS). Guidance on soft-tissue swellings of the foot and ankle.

  • NICE Clinical Knowledge Summary. Ganglion.

  • Journal of Hand Surgery (European Volume). Reviews on wrist ganglia and outcomes of aspiration versus excision.

Red flags

When a lump needs urgent review.

Most ganglia are boringly benign. These are the features that push you towards imaging and a specialist opinion.

  • Rapidly growing lump

    A soft-tissue swelling that grows quickly, becomes hard or fixed, or exceeds a few centimetres deserves urgent imaging to rule out a solid tumour.

  • Persistent night pain

    Ganglia are usually only painful with use. Pain that wakes you at night is atypical and needs a fuller review.

  • Numbness or worsening weakness

    Suggests nerve compression - carpal tunnel from a volar wrist ganglion, or ulnar symptoms from a Guyon canal lesion. See a specialist.

  • Skin changes over the lump

    Redness, warmth, breakdown of skin or discharge suggests infection or a different diagnosis and needs same-week review.

  • Nail deformity from a DIP cyst

    A digital myxoid cyst producing a longitudinal nail groove may need specialist input alongside management of the underlying osteoarthritis.

  • Volar wrist swelling near the artery

    A ganglion adjacent to the radial artery needs careful assessment - aspiration is not routine and specialist input is preferred.

  • Recurrence after surgery

    A ganglion that keeps coming back after aspiration and excision benefits from a hand-surgeon review - imaging and technique can be revisited.

  • Diagnostic doubt

    If the swelling does not transilluminate, feels solid or is in an unusual location, request an ultrasound before treating it as a ganglion.

Living with it

A benign lump, with a clear ladder.

Four things that make the biggest difference day to day - reassurance, adjustment, sensible escalation and proper rehab.

A quiet reminder

Painless does not always mean untreated.

A visible ganglion that bothers you cosmetically or catches on activities is a valid reason to explore aspiration or excision. Your judgement counts.

  1. 01 Reassure

    Benign, not cancer

    Ganglia are non-cancerous and often self-limiting. Understanding that upfront takes a lot of anxiety out of the picture.

  2. 02 Adapt

    Ease the load on the joint

    Small ergonomic tweaks - keyboard, mouse, tool grips, gym technique - often reduce ache and swelling more than any product.

  3. 03 Escalate

    Choose treatment on symptoms

    If a ganglion hurts, weakens grip or bothers you visually, aspiration or excision are reasonable next steps. Painless lumps rarely need surgery.

  4. 04 Recovery

    Rehab after any procedure

    Short splinting, then graded return to load, guided by a hand therapist - protects the repair and reduces the chance of stiffness.

Frequently asked

Everything we get asked about ganglion.

Quick answers on where they appear, whether they resolve on their own, and how aspiration compares to excision.

  • What is a ganglion?

    A benign fluid-filled swelling that arises from a joint capsule or tendon sheath, most often around the wrist, hand or foot. It contains a thick gelatinous synovial-like fluid but is not a true cyst because it has no epithelial lining. This page is our SEO-friendly overview - see also our ganglion cyst and ganglion cysts guides for the same clinical content.

  • Is a ganglion the same as a ganglion cyst?

    Clinically yes - ganglion, ganglion cyst and ganglion cysts refer to the same condition. We keep separate pages because patients search for each variant, and we cross-link them so you always land on the full guide.

  • Where do they most commonly appear?

    The dorsal wrist over the scapholunate ligament is by far the most common site. Other common sites include the volar wrist near the radial artery, the flexor tendon sheath of the fingers (seed ganglion), the DIP joint of a finger (digital myxoid cyst), the dorsal foot, the ankle and behind the knee, where they are called a Baker cyst.

  • Do ganglia go away on their own?

    Often yes. Up to half of ganglia resolve without any treatment, sometimes over months and sometimes years. If the lump is painless and not affecting hand function, observation is a legitimate first step.

  • What is the difference between aspiration and surgical excision?

    Aspiration uses a needle to drain the gelatinous fluid in clinic - it is quick and low-risk, but recurrence is high, around 50 to 70 per cent. Surgical excision removes the ganglion and its stalk from the underlying joint capsule, either open or arthroscopically, and drops recurrence to around 5 to 10 per cent. See our ganglion aspiration and ganglion excision guides for detail.

  • When should I worry about a lump on my wrist or hand?

    Speak to your GP or a hand specialist if the lump is rapidly growing, feels hard or fixed, hurts at night, causes numbness or weakness, or if the overlying skin becomes red, warm or breaks down. These features can point to something other than a ganglion and deserve urgent imaging.

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