Overview
Gout is a form of inflammatory arthritis caused by the buildup of uric acid crystals in the joints, most often affecting the big toe, leading to sudden episodes of severe pain, swelling, and redness known as flares.
Disease Summary
- Category
- Non-Communicable Disease
- Cause
- Buildup of uric acid crystals in the joints
- Transmission
- Not applicable; gout is a non-communicable metabolic condition and cannot be spread between people
- Body System
- Musculoskeletal System
- Preventable
- Yes
- Curable
- No
Symptoms
Common Symptoms
Gout symptoms typically appear suddenly, often overnight, and affect a single joint.
Sudden Severe Joint Pain
Intense pain that often begins suddenly, frequently overnight.
Swelling and Redness
The affected joint becomes visibly swollen and red.
Warmth Around the Joint
The skin over the joint often feels warm to the touch.
Limited Range of Motion
Pain and swelling can make it difficult to move the affected joint.
Danger Signs
Seek prompt medical attention if any of the following develop.
Fever with Joint Pain
May indicate joint infection (septic arthritis) rather than gout and needs urgent evaluation.
Draining Tophi
An open sore draining chalky white material can become infected and requires medical attention.
Multiple Joints Affected at Once
Widespread joint involvement may indicate a more severe flare or a different condition.
Signs of Kidney Problems
Reduced urination or swelling can indicate uric acid crystals affecting the kidneys.
Diagnosis
Clinical Assessment
Diagnosis often begins with reviewing the pattern, timing, and location of joint pain, classically the big toe.
Joint Fluid Analysis
Examining fluid from the affected joint under a microscope for uric acid crystals confirms the diagnosis.
Blood Uric Acid Test
Measures the level of uric acid in the blood, though levels can be normal during a flare.
Laboratory Tests
Joint Fluid Analysis
Detects needle-shaped uric acid crystals, which confirm the diagnosis of gout.
Serum Uric Acid Test
Measures blood uric acid levels, useful for monitoring treatment over time.
Kidney Function Tests
Checks kidney function, since the kidneys are involved in removing uric acid from the body.
X-ray Imaging
Can show joint damage or tophi in long-standing gout, though it is often normal early in the disease.
Treatment
Flare Management
Anti-inflammatory medications and, in some cases, corticosteroids help control pain and swelling during a gout attack.
Long-term Uric Acid Lowering Therapy
Medications that lower uric acid levels reduce the frequency of future flares and help prevent joint damage.
Prevention
Limit foods high in purines
Reducing intake of red meat, organ meat, and certain seafood can lower uric acid levels.
Limit alcohol, especially beer
Alcohol, particularly beer, can raise uric acid levels and trigger flares.
Maintain a healthy weight
Excess weight increases uric acid production and joint stress.
Stay well hydrated
Drinking enough water supports the kidneys in removing excess uric acid.
Risk Factors
High Risk
These factors substantially increase the likelihood of developing gout.
- High uric acid levels (hyperuricemia)
- Family history of gout
- Male sex
Increased Risk
These factors are associated with a moderately higher risk of gout.
- Obesity
- Diets high in red meat, organ meat, or seafood
- Regular alcohol consumption, especially beer
Additional Contributing Factors
Other factors linked with an increased likelihood of gout.
- Certain diuretic medications
- Chronic kidney disease
- Conditions such as high blood pressure or diabetes
Complications
Tophi
Chronic high uric acid levels can lead to hard deposits forming under the skin, most often around joints.
Joint Damage
Repeated flares without treatment can permanently damage cartilage and bone.
Kidney Stones
Uric acid crystals can also form in the kidneys, leading to painful kidney stones.
When to Seek Medical Care
Sudden Severe Joint Pain
A first suspected gout flare should be evaluated to confirm the diagnosis and start appropriate treatment.
Fever with Joint Swelling
May indicate infection rather than gout and needs urgent assessment.
Frequent Flares
Recurring attacks may mean long-term uric acid lowering therapy should be started or adjusted.
Visible Tophi
New or draining lumps near a joint should be evaluated by a healthcare provider.
Prognosis
Well Controlled with Treatment
Most people with gout have far fewer flares once on consistent uric acid lowering therapy.
Risk of Recurrence Without Treatment
Flares tend to become more frequent and severe over time if uric acid levels are not controlled.
Good Long-term Outlook
With proper management, many people become largely flare free and avoid long-term joint damage.
Differential Diagnosis
Septic Arthritis
A joint infection that causes fever and severe pain, requiring urgent treatment to prevent joint damage.
Pseudogout
A similar crystal-induced arthritis caused by different crystals, distinguished through joint fluid analysis.
Cellulitis
A skin infection that can cause redness and swelling near a joint without true joint involvement.
Rheumatoid Arthritis
An autoimmune condition that typically affects multiple joints symmetrically, unlike the usual single-joint pattern of gout.
References
Centers for Disease Control and Prevention (CDC)
CDC guidance on gout symptoms, diagnosis, and treatment.
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
NIH guidance on gout causes, symptoms, and risk factors.
Mayo Clinic
Patient-focused overview of gout symptoms and causes.
Frequently Asked Questions
Can gout be cured?
No. There is currently no cure, but long-term medication and lifestyle changes can control uric acid levels and prevent most future flares.
Does gout only affect the big toe?
No. While the big toe is the most common site, gout can affect other joints such as the ankles, knees, wrists, and elbows.
Is gout caused by diet alone?
No. Diet plays a role, but genetics, kidney function, and other health conditions also strongly influence uric acid levels.
Can gout come back after a flare resolves?
Yes. Without ongoing treatment, gout flares often recur and can become more frequent over time.