Is It Gout? The Painful Big Toe Compared
Gout, bunion, pseudogout, cellulitis and injury separated by how fast they come on, which joint they pick, and what the skin does.
Part of the Complete Gout Guide.
Key fact: Gout's signature is speed. Pain that goes from nothing to unbearable within hours, usually overnight, in a single joint, points to a crystal attack. Pain that builds over weeks, or that is worse after activity and better with rest, usually does not.
The gout signature
Around half of first gout attacks are in the big toe joint, and the pattern is distinctive enough to be worth learning:
- Sudden. Fine at bedtime, woken at 3am unable to bear the weight of a sheet
- One joint. Usually, at least at first
- Red and hot, with shiny, tight skin over it
- Exquisitely tender — light touch is worse than pressure
- Peaks within 12 to 24 hours, then settles over one to two weeks if untreated
- Skin peels over the joint as it resolves
- Completely normal in between, at least in the early years
What argues against gout: a gradual build over weeks, pain that is worse after walking and eased by rest, both feet at once from the start, or a joint that is stiff in the morning for an hour and then loosens.
The main causes compared
| Cause | Speed of onset | Typical picture |
|---|---|---|
| Gout | Hours, often overnight | One joint, red, hot, unbearable to touch, settles over 1–2 weeks |
| Septic arthritis | Hours to days | Looks like gout, plus feeling unwell, fever, joint immovable. Emergency |
| Bunion with osteoarthritis | Months to years | Aching, stiff, worse after walking, visible deformity, no redness |
| Pseudogout | Hours to a day | Usually knee or wrist rather than toe, older adults, lasts 7–10 days |
| Cellulitis | Days | Redness spreading beyond the joint, often from a break in the skin, fever |
| Fracture or turf toe | Immediate, after an event | A remembered injury, bruising, pain on specific movements |
| Rheumatoid arthritis | Weeks | Several small joints, both sides, morning stiffness over an hour |
Bunion and osteoarthritis
The commonest thing mistaken for gout, and the commonest thing gout is mistaken for. Osteoarthritis of the big toe joint — often with a bunion — produces a joint that is enlarged, stiff and sore, with pain that is mechanical: worse with walking and standing, better with rest, worse in stiff or narrow shoes.
The separating features are speed and heat. Osteoarthritis does not appear overnight and does not make the skin red and hot. What it can do is make gout more likely in that joint, so having a bunion does not mean a sudden hot attack in it is not gout.
Pseudogout
Calcium pyrophosphate deposition — pseudogout — is the other crystal arthritis, and it behaves like gout in the wrong joints.
| Gout | Pseudogout | |
|---|---|---|
| Typical joints | Big toe, midfoot, ankle, knee | Knee most often, then wrist, shoulder, hip |
| Typical age | Middle age onwards; men earlier than women | Older adults; a large proportion of people over 85 show it on X-ray |
| Attack length | 1–2 weeks untreated | Usually 7–10 days, self-limiting |
| On X-ray | Erosions in long-standing disease | Chondrocalcinosis — calcium visible in the cartilage |
| Crystals in joint fluid | Needle-shaped, strongly negatively birefringent | Rhomboid, weakly positively birefringent |
| Urate level | Often raised | Not raised by the condition |
Practically: a sudden hot knee in someone in their seventies with a normal urate level is more likely to be pseudogout than gout. Treatment of the acute attack overlaps — anti-inflammatories, colchicine or steroids — but allopurinol does nothing for it, which is the reason the distinction matters beyond naming it.
Cellulitis
Skin and soft-tissue infection can look convincingly like gout, and the two are confused in both directions. The differences:
- Cellulitis spreads — redness extends up the foot or leg with a advancing edge, rather than sitting over one joint
- There is often a way in — a crack between the toes, athlete's foot, a blister, an ulcer
- The joint itself moves reasonably well, because the problem is in the skin, not inside the joint
- Fever and feeling unwell are common
Cellulitis needs antibiotics, and cellulitis over a joint raises the question of whether the infection has reached the joint — see gout or septic arthritis.
Fracture, sprain and turf toe
Usually straightforward because there is an event to remember, but two traps exist. A stress fracture in the foot builds over days or weeks without a single injury, and produces localised bony tenderness rather than a swollen red joint. And "turf toe" — a sprain of the big toe joint from forced upward bending — causes pain and swelling at exactly the gout site, but hurts on specific movement rather than at rest, and follows sport or a stumble.
If you cannot bear weight at all after an injury, or there is obvious deformity or bruising along the bone, that needs an X-ray rather than an anti-inflammatory.
The less common causes
- Rheumatoid arthritis — several small joints, symmetrical, prolonged morning stiffness, builds over weeks
- Psoriatic arthritis — can affect a single toe and swell the whole digit (dactylitis, a "sausage toe"); look for psoriasis or nail pitting
- Reactive arthritis — a joint becoming inflamed one to four weeks after a gut or genital infection
- Ingrown toenail or paronychia — pain and redness at the nail edge rather than the joint
- Morton's neuroma — burning between the toes with a feeling of a pebble underfoot, no redness
What actually decides it
History does most of the work — the speed of onset, which joint, what happened before, whether you feel unwell. After that:
- Serum urate, which supports a diagnosis of gout at 360 micromol/litre or above. But it can be normal during an attack, so a normal level taken mid-flare does not exclude gout and should be repeated at least two weeks after it settles. More on interpreting the level
- Joint aspiration, which is definitive and distinguishes urate crystals, calcium pyrophosphate crystals and infection
- X-ray, useful for chondrocalcinosis in pseudogout, for erosions in long-standing gout, and for fractures — but normal early in gout
When to be seen
Same day: a hot swollen joint with fever, chills or feeling unwell; a joint you cannot move at all; a joint with a replacement in it; spreading redness; or inability to bear weight after an injury. Routinely, but do go: a first attack of anything that behaves like gout, so it can be confirmed properly rather than assumed — because the diagnosis determines years of subsequent treatment.
Getting the label right at the first attack matters more than it seems. A wrong assumption of gout means years of urate-lowering treatment for something it will not help; a missed gout diagnosis means avoidable joint damage. What untreated gout does over time covers the second half of that.
Frequently Asked Questions
How do I know if my big toe pain is gout?
Gout comes on over hours, usually overnight, in a single joint that becomes red, hot and so tender that light touch is unbearable. It peaks within 12 to 24 hours and settles over one to two weeks. Pain that builds over weeks, or is worse after walking and better with rest, is more likely to be osteoarthritis or a bunion.
What can be mistaken for gout?
Septic arthritis, which is an emergency and looks almost identical; osteoarthritis with a bunion; pseudogout, which usually affects the knee or wrist in older adults; cellulitis, where redness spreads beyond the joint; and injuries including stress fractures and turf toe.
What is the difference between gout and pseudogout?
Pseudogout is caused by calcium pyrophosphate crystals rather than urate. It typically affects the knee, wrist or shoulder rather than the big toe, is commoner in older adults, lasts about 7 to 10 days, shows calcium in the cartilage on X-ray, and does not raise the urate level. Allopurinol does not help it.
Can you have gout without a high uric acid level?
Yes. Urate is often normal or low during an acute attack, so a normal level taken mid-flare does not exclude gout. NICE advises repeating the measurement at least two weeks after the flare has settled if gout is still suspected.
Is it gout or an infection in my toe?
You cannot reliably tell from symptoms. Redness that spreads beyond the joint, often from a crack in the skin or athlete's foot, suggests cellulitis. A joint you cannot move at all, with fever or feeling unwell, suggests infection inside the joint and needs same-day assessment.
References
- National Institute for Health and Care Excellence. Gout: diagnosis and management (NG219). nice.org.uk
- NHS. Gout. nhs.uk
- NHS. Septic arthritis. nhs.uk
- British Society for Rheumatology. Management of the hot swollen joint in adults. rheumatology.org.uk
- National Institute for Health and Care Excellence. Clinical Knowledge Summary: Gout. cks.nice.org.uk
Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. A hot, swollen joint should never be assumed to be gout without assessment, particularly alongside fever or feeling unwell. Always consult a qualified healthcare professional for diagnosis and treatment. In a medical emergency, call 999.