Tophi: What They Are and How They're Treated
Firm Deposits, Not a Verdict on How You've Managed Gout
Tophi are visible deposits of uric acid crystals that can develop after a longer period of poorly controlled gout. They can look concerning, but they're well understood, treatable, and — with sustained care — can shrink over time.
The Quick Answer
A tophus (plural: tophi) is a firm lump made of uric acid crystals that builds up under the skin, usually after gout has been present — and not fully controlled — for a long time, often many years. They tend to appear around the fingers, elbows, ears or toes, aren't always painful, and don't affect everyone with gout. The mainstay of treatment isn't the lump itself but the underlying uric acid level: with sustained, adequate urate-lowering treatment, tophi can gradually shrink and resolve over months to years. A new or unfamiliar lump shouldn't be assumed to be a tophus without an assessment — several other conditions can look similar.
A Sign, Not a Verdict
Tophi mean sustained urate control matters going forward — not that you've done anything wrong.
Not Every Lump Is a Tophus
Several other conditions can look similar — a new lump is worth having assessed rather than assumed.
They Can Shrink
Sustained, adequate urate-lowering treatment allows tophi to gradually reduce over time.
Surgery Is Occasional
Used only for select, symptomatic cases when medical treatment alone hasn't resolved a problem tophus.
What Is a Tophus?
A tophus (the plural is tophi) is a deposit of monosodium urate crystals — the same type of crystal responsible for a gout flare — that has built up in the soft tissue around a joint, rather than staying confined inside it. Over time, enough crystal material can accumulate to form a firm, visible or palpable lump under the skin. It's essentially chronic gout made physically visible: a marker of urate that's been elevated for a sustained period, rather than a separate disease.
Why Do Tophi Develop?
Tophi are a late-stage complication of chronic, longer-standing gout — they typically take years to develop, often reported as around a decade or more after a first attack, and usually in the context of gout that hasn't been adequately treated. Not everyone with recurrent gout develops tophi; they're associated with sustained high urate levels over an extended period, and some factors — such as reduced kidney function, long-term diuretic use, or a delayed start to urate-lowering treatment — appear to make them more likely.
It's worth saying plainly: having tophi isn't a personal failing. They reflect how long urate has been elevated and how it's been managed medically, which involves far more than willpower or effort — genetics, kidney function, and access to timely treatment all play a role.
Where Can Tophi Appear?
Tophi tend to appear at or near joints affected by gout, and in a few other characteristic spots. Common locations include the fingers, the outer ear (helix), the elbow (particularly the bony point, or olecranon), and the toes and feet — including near the big toe. They can also appear around the knee, wrist and heel. Multiple sites are possible, especially with longer-standing disease.
What Do Tophi Look and Feel Like?
Tophi typically feel firm to hard, and can range from small and barely noticeable to considerably larger. As they enlarge, a whitish or chalky material may become visible beneath thin overlying skin, and in some cases the skin over a tophus can break down, occasionally releasing a paste-like white material — a sign that's worth having assessed rather than managed at home. There isn't good information available on how tophi appear differently across different skin tones, so it's difficult to describe colour changes reliably here; any new discolouration, warmth or change in a lump is a reason to get it checked rather than a detail to self-diagnose from.
Several unrelated conditions can produce a lump that looks similar to a tophus, sometimes in exactly the same location. A lump can't be reliably identified as a tophus from appearance or a photo alone — it needs clinical assessment, ideally by someone who knows your gout history.
Are Tophi Painful?
Not always. Many tophi are painless and are noticed simply as a firm lump rather than because they hurt. That said, they can become symptomatic — particularly if they become inflamed, grow large enough to press on nearby structures, or if the skin over them breaks down. Pain isn't a reliable way to judge how serious a tophus is; a painless one can still be worth treating.
Can Tophi Damage Joints?
Left untreated over a long period, tophi in and around a joint can contribute to cartilage and bone damage, and can reduce movement or function in the affected area. Skin overlying a tophus can occasionally break down or ulcerate, and in some cases a tophus can press on a nearby nerve. These are recognised, documented complications of longstanding, undertreated tophi — not something that happens to everyone who has them, and proportionate treatment is specifically aimed at preventing them.
Tophi vs Other Lumps
Several other conditions can produce a lump near a joint that looks similar to a tophus at a glance, which is exactly why clinical assessment — not appearance alone — is what actually tells them apart.
- Osteoarthritis nodes (Heberden's and Bouchard's nodes) — bony swellings at finger joints, which can occasionally occur at the same sites as tophi, adding to the confusion
- Rheumatoid nodules — firm lumps associated with rheumatoid arthritis, often near the elbow, a location tophi also favour
- Ganglion cysts — fluid-filled lumps, most common at the back of the wrist, generally softer and more fluctuant than a tophus
- Other soft-tissue lumps — a range of other causes exist, which is part of why a new lump deserves proper assessment
Our Gout in the Hand and Fingers guide covers the hand-specific comparison with Heberden's and Bouchard's nodes and rheumatoid nodules in more detail.
How Are Tophi Diagnosed?
Diagnosis usually starts with clinical assessment: a healthcare professional will consider your gout history, examine the lump, and often check your serum urate level for context. Where the diagnosis isn't clear-cut, fluid can sometimes be taken from the area and examined under a microscope for urate crystals — a reliable way of confirming what's actually there. Imaging, such as ultrasound or specialised CT scanning, can also help identify urate deposits in some cases, particularly in secondary care, though it isn't a routine first step for every person. Appearance alone — without this clinical context — isn't considered a reliable way to diagnose a tophus.
How Are Tophi Treated?
The core treatment for tophi isn't aimed at the lump directly — it's the same long-term, urate-lowering treatment used to manage gout generally, sustained consistently over time. Bringing serum urate down to target, and keeping it there, is what allows the crystal deposits making up a tophus to gradually clear. UK guidance sets a general target of below 360 micromol/L (6 mg/dL), with a lower target of below 300 micromol/L (5 mg/dL) specifically considered for people who have tophi, chronic gouty arthritis, or ongoing frequent flares — on the basis that this group has a larger crystal burden that takes longer to shift. Regular monitoring, and taking treatment consistently rather than intermittently, both matter for this to work.
This page doesn't cover medication doses or which specific treatment is right for you — see our Gout Treatment guide and Living With Gout guide for the broader picture, and speak to your doctor about your own treatment plan.
Can Tophi Shrink or Go Away?
Yes — with sustained, adequately controlled urate levels, tophi can gradually reduce in size and, over time, resolve. This is well established as a treatment goal, though it's a gradual process best measured in months to years rather than weeks, and the exact pace varies from person to person depending on how low urate is brought, how consistently treatment is followed, and how large the deposits were to begin with. There isn't a single reliable timeline that applies to everyone, so it's not something we can promise a specific figure for here — but shrinkage and resolution are a genuine, achievable outcome of sustained treatment, not a rare exception.
Is Surgery Ever Used?
Occasionally, yes — but it's not a routine or first-line treatment. Surgery is generally only considered for a tophus that's causing significant pain, restricting movement, pressing on a nerve, or repeatedly breaking down or infected, and where medical treatment alone hasn't been able to resolve the problem. Like any surgery, it carries its own risks — including infection, wound healing problems, and possible damage to nearby tendons or nerves — so it's a decision made individually between a person and their specialist, generally after urate-lowering treatment has been given a proper chance to work.
When Should You Seek Medical Advice?
Get a lump assessed — rather than assuming it's a tophus — if it's new, growing quickly, or you're not sure what it is. The same applies more urgently to any joint that becomes hot, swollen and increasingly painful, especially alongside fever or feeling generally unwell, which needs prompt medical assessment to rule out joint infection rather than being assumed to be gout or a tophus.
A joint is hot, swollen and rapidly worsening, especially with fever or feeling unwell; a lump starts discharging fluid or shows signs of infection (increasing redness, warmth, pain); or you notice any new, unexplained or fast-growing lump.
Living With Tophi
There isn't a great deal of specific, well-established practical guidance on living with tophi day to day — much of what matters most is the underlying treatment covered above. In general terms, a tophus that's affecting hand use, grip, or footwear comfort is worth mentioning to your healthcare team, since it can factor into decisions about treatment and, occasionally, whether a referral for further assessment is useful. Protecting skin over a prominent tophus from repeated pressure or friction is a sensible, general precaution, though we don't have specific product or device recommendations to offer here.
Common Myths About Tophi
"I've had gout, so any new lump must be one."
Several other conditions can produce a similar-looking lump, sometimes in the same location. A new lump is worth getting assessed rather than assumed.
"This is my fault for not doing enough."
Tophi reflect how long urate has been elevated and how gout has been medically managed, including factors like kidney function and access to timely treatment — not simply personal effort.
"There's nothing that can be done about them now."
Tophi can shrink and resolve over time with sustained, adequate urate-lowering treatment. It's a gradual process, but it's a genuine, achievable outcome.
"Surely a lump like that has to be cut out."
Surgery is only used occasionally, for select symptomatic cases where medical treatment hasn't resolved the problem. Most tophi are managed through sustained urate-lowering treatment alone.
"If it doesn't hurt, it can't be serious."
Many tophi are painless. Pain isn't a reliable guide to how significant a tophus is — a painless one can still be worth treating.
Frequently Asked Questions
Can I tell if a lump is a tophus just by looking at it?
Not reliably. Several other conditions can look similar, sometimes in the same location. A proper assessment, considering your gout history and sometimes tests, is what actually confirms it.
Does everyone with gout eventually get tophi?
No. Tophi generally only develop after a long period of poorly controlled gout, and many people with gout — especially with timely treatment — never develop them.
Are tophi dangerous?
Most aren't dangerous, though longstanding, untreated tophi can occasionally lead to joint damage, skin breakdown or nerve pressure. Treatment is aimed at preventing these.
How long does it take for a tophus to shrink?
It varies considerably between people and depends on how well urate is controlled, so we can't give a single reliable timeframe here — but it's generally a gradual process over months to years, not weeks.
Can diet alone shrink a tophus?
Diet can support overall management, but for most people with tophi, appropriate long-term urate-lowering treatment is what actually brings urate low enough to shrink them. See our Living With Gout guide.
Should I try to drain or squeeze a tophus myself?
No — this isn't something to do yourself, as it risks infection and skin damage. If a tophus is discharging or causing problems, get it assessed by a healthcare professional.
Can tophi appear somewhere other than the joints?
Yes — the ear is a well-known example of a site that isn't a joint. Tophi form wherever urate crystals accumulate in soft tissue, which is often but not always right at a joint.
Do tophi mean my gout treatment has failed?
Not necessarily — tophi often reflect a period before treatment was optimised or started, and having them is actually one of the reasons a lower urate target is specifically considered.
Can a tophus become infected?
If the skin over a tophus breaks down, it can create an entry point for infection. Increasing redness, warmth, pain or discharge should be assessed promptly.
Is imaging always needed to diagnose a tophus?
No — many tophi are diagnosed on clinical assessment and history alone. Imaging or fluid testing is used selectively, when the diagnosis isn't clear.
Will a tophus come back after treatment?
If urate is kept consistently controlled, new tophi shouldn't form. This is part of why ongoing treatment and monitoring — not a one-off fix — is the standard approach.
This guide is for general educational purposes and explains tophi in outline — it is not personal medical advice and cannot diagnose a lump for you. Never assume a lump is a tophus without assessment, and never start, stop or change a prescribed medicine based on this page. Always speak with your own doctor about diagnosis, treatment, and anything related to your prescribed medication.