gout

Gout: Causes, Symptoms, and Treatment Options

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Over 8.3 million people in the United States suffer from gout1. This type of arthritis can happen to anyone. It’s known for sudden, severe pain, swelling, redness, and tenderness in the joints2. This pain comes from too much uric acid in the body2.

If not treated, gout can lead to more attacks, tophi formation, and kidney stones31. It’s a condition that needs attention to avoid serious problems.

Many think gout is rare and old-fashioned, but it’s becoming more common. It affects about 4% of adults in the U.S3.. Knowing about gout’s causes, symptoms, and treatments is key to managing it well and avoiding long-term harm.

Key Takeaways

  • Gout is a common and complex form of arthritis caused by the buildup of uric acid in the body.
  • Sudden, severe joint pain, inflammation, and limited range of motion are hallmark symptoms of gout.
  • Risk factors for gout include diet, lifestyle, medical conditions, medications, age, gender, and family history.
  • Diagnosis involves joint fluid analysis, blood tests, and imaging studies.
  • Treatments for gout attacks and prevention focus on reducing uric acid levels and managing symptoms.

Overview of Gout

Gout is a type of inflammatory arthritis caused by too much uric acid in the body. This leads to sharp urate crystals forming in the joints4. It affects about 4% of adults in the U.S4..

What is Gout?

Gout is a disease where uric acid crystals build up in the joints, often in the big toe’s base4. Other joints like the ankles, knees, elbows, wrists, and fingers can also be affected4. The pain from gout is sudden and severe, usually happening at night or early in the morning4.

Prevalence and Risk Factors

Gout is more common in men, especially between 30 and 50 years old, and in women after menopause45. Eating a lot of red meat and shellfish, drinking too much alcohol, being overweight, and having certain health conditions increase the risk of gout45.

Gout Facts Statistics
Gout affects approximately 1-2% of the population in industrialized countries. 6
Men are five times more likely to develop gout than women. 6
Acute gout attacks usually resolve within one to two weeks on their own. 6
Nearly 1 out of 100 men with gout will develop kidney stones within one year. 6
After an average of about twelve years, gout can become chronic and lead to joint damage. 6
About 30 out of 100 people with acute gout develop tophi within five years if left untreated. 6

“Gout is a complex form of inflammatory arthritis that can affect anyone. It is characterized by sudden, severe attacks of pain, swelling, redness, and tenderness in the joints, often the large joint of the big toe.”

In summary, gout is a common and treatable form of inflammatory arthritis that mainly affects the joints, especially the big toe. Understanding the prevalence, risk factors, and key facts about gout is essential for effective management and prevention of this condition.456

Symptoms of Gout

Gout is a type of inflammatory arthritis that brings sudden and severe joint pain3. The joint, often the big toe, swells, turns red, and becomes very tender, making it hard to move7. Gout attacks start suddenly, often at night, and the pain peaks in the first 4 to 12 hours3.

Sudden and Severe Joint Pain

The main sign of gout is sudden, intense pain in a joint, usually the big toe7. This pain is so bad that even a little touch or movement hurts a lot7. The joint may feel warm, look swollen, and turn red7.

Inflammation and Redness

Gout causes a lot of inflammation in the joint, making it red, swollen, and tender7. This happens because uric acid crystals build up in the joint, which triggers an immune response7. The inflammation makes the joint feel hot and moving it hurts a lot7.

Limited Range of Motion

Because of the inflammation and swelling, moving the affected joint is hard7. Even simple actions like walking become tough during a gout flare-up7. If not treated, this inflammation can damage the joint for good3.

Though the first gout attack may go away in a few days, future ones might last longer and affect more joints if not treated3. Getting treatment and making lifestyle changes can help manage gout and stop complications7.

“Gout is a common type of inflammatory arthritis, causing pain, swelling, and redness in one or more joints.”7

Symptom Description
Sudden Joint Pain Intense, sudden pain in the affected joint, often the big toe, that can be severe enough to cause extreme discomfort even with the lightest touch or movement7.
Inflammation and Redness The affected joint becomes swollen, red, and extremely tender due to the buildup of uric acid crystals, triggering an immune response7.
Limited Mobility The inflammation and swelling can severely limit the range of motion in the affected joint, making it difficult to move and perform everyday tasks7.

Spotting and treating gout early is crucial for managing it and preventing serious problems7. By knowing the signs of a gout attack, people can get quick medical help and work on controlling their uric acid levels to lessen future attacks738.

Causes of Gout

Uric Acid and Purine Metabolism

Gout happens when uric acid builds up in the body. This acid is made when the body breaks down purines, found in foods and naturally in the body9. Normally, uric acid dissolves in blood and gets rid of it through the kidneys. But, if the body makes too much or the kidneys can’t get rid of it, uric acid levels go up. This leads to urate crystals in the joints, causing gout’s painful symptoms.

High uric acid levels, or hyperuricemia, are a big part of getting gout8. About 21% of people in the U.S. have high blood uric acid, and those with it might get gout8. Not everyone with high uric acid gets gout, but the crystals in the joints trigger the gout attacks.

Many things can make you more likely to get gout, like what you eat, how you live, your health, and your genes8. Being overweight, drinking a lot of alcohol, having high blood pressure, diabetes, or kidney issues can increase your risk8. If your parents had gout, you’re 20% more likely to get it too8.

Knowing how uric acid and purine metabolism work is key to understanding gout. By changing your diet, lifestyle, and using certain medicines, you can stop and manage gout attacks9108.

Risk Factors for Gout

Gout is a type of arthritis that can happen to anyone. But, some things can make it more likely. Knowing these risk factors helps in managing and preventing it.

Diet and Lifestyle Factors

Eating a lot of foods high in purine, like red meat and some seafood, can lead to gout11. Drinking too much alcohol, especially beer, can also raise uric acid levels and increase gout risk11. Eating well and drinking less of these can lower gout risk.

Medical Conditions and Medications

Some health conditions and medicines can make gout more likely. Being overweight, having diabetes, high blood pressure, or kidney disease can raise gout risk12. Also, some drugs, like diuretics and certain immunosuppressants, can affect uric acid levels and increase gout risk12.

Age, Gender, and Family History

Age, gender, and family history also affect gout risk. Men are more likely to get gout than women, with about 4% of men affected versus 1% of women11. Gout often starts in people between 40 and 60 years old13. Having a family history of gout also makes it more likely to get it13.

Understanding gout risk factors helps people take steps to stay healthy and avoid this painful condition111213.

Diagnosing Gout

Diagnosing gout is key to managing this condition. It affects over 8 million Americans every year14. Gout leads to almost $1 billion in costs and 7 million visits to doctors in the U.S. each year14. Doctors use symptoms, medical history, and tests to confirm gout.

Joint Fluid Analysis

A joint fluid analysis is the best way to diagnose gout. This test involves taking fluid from the affected joint and checking it for urate crystals under a microscope15. It helps confirm if someone has gout.

Blood Tests

Blood tests can also help diagnose gout by checking uric acid levels15. But, having high uric acid doesn’t always mean someone has gout. And some with gout might have normal uric acid levels15. So, blood tests alone aren’t enough to confirm gout.

Imaging Tests

Imaging tests like X-rays and ultrasound help diagnose gout15. They show where urate crystals have built up in the joints, which is a sign of gout15. X-rays might not show damage right away but can rule out other joint pain causes15.

Doctors use symptoms, medical history, and test results to accurately diagnose gout141615. This helps them create the right treatment plan.

Treating Gout Attacks

When a gout attack hits, the main goals are to quickly reduce inflammation and ease the severe pain. Luckily, there are many effective medicines to help with these flare-ups17.

Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)

NSAIDs like celecoxib, indomethacin, meloxicam, or sulindac are often prescribed for gout. You can also use over-the-counter options like ibuprofen (Motrin, Advil) or naproxen (Aleve)1718. These drugs aim to lessen the inflammation and ease the pain in the joints during a gout attack.

Colchicine

Colchicine is another go-to for treating gout attacks. It’s been around for centuries and works just as well as NSAIDs in reducing pain19. But, it’s important to be careful with colchicine, especially if you have kidney or liver issues, or take other certain drugs19.

Corticosteroids

If NSAIDs or colchicine don’t work, corticosteroids might be an option. Glucocorticoids, like a single shot of intraarticular steroids, can help a lot, often within 24 hours19. These drugs target the inflammation, making them a key choice for acute gout attacks.

Choosing the right medicine for a gout attack depends on your health history and other conditions. Always talk to a healthcare provider to find the best treatment for you17.

gout treatment

Preventing Gout Complications

If you get gout often or have joint damage, your doctor might suggest medications to prevent future problems20. These drugs either stop uric acid production or help remove it from your body21. Allopurinol and febuxostat reduce uric acid production, while probenecid helps your kidneys get rid of it20. A “treat-to-target” approach aims to lower uric acid levels to a certain range. This can manage gout, reduce attacks, and lower the risk of complications.

Medications to Block Uric Acid Production

Allopurinol and febuxostat are often given to prevent gout issues by stopping uric acid production20. They do this by slowing down the enzyme xanthine oxidase, which turns purines into uric acid21. This way, these drugs can decrease the chance of uric acid crystals forming and gout attacks happening.

Medications to Improve Uric Acid Removal

Probenecid is another drug that helps remove uric acid from your body20. It makes your kidneys better at getting rid of uric acid, lowering your overall levels21. This is especially helpful for people who can’t control their uric acid levels with diet and lifestyle changes alone.

It’s important to stick with a long-term plan that includes both medication and lifestyle changes to prevent gout complications20. Working with your healthcare provider to find the right treatment plan can greatly improve your life with gout.

Lifestyle Management of Gout

Changing your lifestyle can help manage gout and prevent future attacks. Eating less of foods high in, like red meat and certain seafood, can lower uric acid levels. Also, drinking less alcohol and sugary drinks helps. Staying at a healthy weight through diet and exercise can also reduce gout risks. Eating a Mediterranean or DASH diet, full of whole foods, is good for managing gout.

Dietary Changes

Changing what you eat is key to managing gout. Studies show that eating fewer calories and losing weight can lower uric acid levels and cut down on gout attacks22. Drinking moderate amounts of coffee might also help prevent gout22. Cherries and vitamin C can also help manage gout symptoms22.

Some foods, like organ meats, are high in purines and can raise uric acid levels22. But, vegetables like asparagus and spinach are safe for people with gout22. Seafood, including anchovies and tuna, is also high in purines but can be part of a healthy diet for gout sufferers22.

Weight Management and Exercise

Being overweight increases the risk of gout, and losing weight can help manage it23. A diet with fewer calories and more fruits and vegetables is better than just cutting out purine-rich foods23. Eating less meat and fish can also reduce gout risk23.

Regular exercise, like walking or swimming, is important for managing gout23. It helps keep a healthy weight and lowers the chance of gout attacks23.

“Losing weight can lower uric acid levels and significantly reduce the risk of gout attacks.”23

Food/Beverage Impact on Gout
Alcoholic beer Raises uric acid by 6.5%24
Nonalcoholic beer Raises uric acid by 4.4%24
Coffee Long-term drinkers (4-6 cups per day) have less risk of developing gout24
Sweet drinks (soda, fruit juice) Increase the likelihood of developing gout24
Vitamin C Helps decrease uric acid levels and prevent gout attacks24
Organ meats High in purines, can increase uric acid levels and spur a gout attack24
Cold water fish Can increase uric acid levels, impacting the risk of gout attacks24

222324

Complications of Gout

Gout can lead to serious problems if not treated. These problems can greatly affect a person’s life25. Common issues include frequent gout attacks, advanced gout, and a higher chance of getting kidney stones.

Recurrent Gout Attacks

Recurrent gout attacks are a big problem25. These attacks cause sudden, severe pain and swelling in the joints. Over time, they can damage the joints, making it hard to move.

Advanced Gout and Tophi Formation

Advanced gout can cause tophi to form25. Tophi are hard, uric acid crystals that can be found under the skin or in the joints. They cause more pain, make joints work poorly, and can even destroy them.

Kidney Stones

Gout can also increase the risk of kidney stones2526. These stones are very painful and can harm the kidneys. They often need medical treatment.

Gout is linked to other health issues too, like osteoarthritis26. It’s also connected to diabetes, high blood pressure, and metabolic syndrome26.

Diagnosing and treating gout early can reduce these risks. It helps keep joints working well and improves life quality25.

Complication Description Impact
Recurrent Gout Attacks Sudden and severe episodes of joint pain, inflammation, and redness Progressive joint damage and long-term disability
Advanced Gout and Tophi Formation Hard deposits of uric acid crystals that form under the skin or in the joints Joint dysfunction, potential joint destruction, and further discomfort
Kidney Stones Painful and potentially debilitating conditions caused by the buildup of uric acid Interference with kidney function and the need for medical intervention

“Gout is a complex form of arthritis that can lead to significant joint damage and other health complications if left untreated. Early intervention and proactive management are crucial to preventing these issues and improving the quality of life for individuals with gout.”

Knowing about gout’s complications helps people manage it better. By acting early, they can lessen the disease’s effects and stay healthy252726.

gout

Gout is a type of inflammatory arthritis caused by too much uric acid in the body. This leads to sharp crystals forming in the joints28. It’s more common in men and often hits people with high blood uric acid levels28. Gout attacks can last from five to seven days and can come back, sometimes lasting longer or happening more often28.

Men get gout about four times more than women28. The risk goes up with age, especially for men between 30 and 50, and women after menopause4. Things like diet, lifestyle, and health conditions can make gout worse by raising uric acid levels. This can be due to genes, being overweight, or certain medicines74.

Gout attacks bring sudden, severe pain, swelling, redness, and stiffness, usually in the big toe but can be in any joint7. These symptoms can last different lengths of time, with later attacks often being longer and hitting more joints4.

Doctors use blood tests to check uric acid levels and imaging tests like ultrasound, CT scans, and X-rays to see joint damage and uric acid crystals28.

For gout, doctors might prescribe NSAIDs, colchicine, or corticosteroids to help with attacks. They also suggest medicines to lower uric acid and prevent more attacks7. With the right treatment and changes in diet and weight, gout can be managed well. This helps avoid problems like more attacks, tophi, and kidney stones7.

gout

Gout needs a full approach, including early diagnosis, right treatment, and lifestyle changes. Knowing the causes, symptoms, and treatment options helps people manage their gout better and live better lives2874.

“With early diagnosis, treatment, and lifestyle changes, gout is one of the most controllable forms of arthritis.”7

Mental Health and Gout

Gout is often linked to poor lifestyle choices, leading to a big stigma around it29. This stigma, along with the fear of more pain, can make stress and inflammation worse, making gout symptoms worse30. Studies show that people with gout might be more likely to feel depressed, especially if they have many flare-ups29.

Research found that people with gout had a higher chance of getting depression, at 10.8 per 1000 person-years29. Another study showed that gout patients were 42% more likely to get depression than those without it30. The chronic inflammation from gout can affect mood-regulating neurotransmitters30.

The stigma around gout also affects mental health. Gout patients might feel embarrassed, ashamed, and isolated because of how others see the condition31. This can make depression and anxiety worse, making the physical symptoms of gout even harder to handle31.

It’s key for gout patients to deal with mental health issues and get support from loved ones and the arthritis community29. By tackling the stigma and mental health problems, people with gout can better manage their condition and improve their overall health31.

“Gout is more than just a painful joint condition; it can also have significant impacts on mental health. Addressing the stigma and emotional challenges surrounding gout is crucial for improving overall well-being.”

Dealing with Stigma and Depression

The stigma around gout makes it hard for people to get support and manage their condition well29. Patients might feel too embarrassed or ashamed, leading to social isolation and not talking about their symptoms with doctors31. This can make stress and gout flare-ups worse, creating a bad cycle30.

To handle the mental health issues with gout, patients should:

  • Learn about gout and clear up myths to reduce stigma31.
  • Find support from mental health experts, groups, or online communities to deal with depression and anxiety29.
  • Use stress-reducing activities like mindfulness, meditation, or exercise to lessen the emotional effects of gout30.
  • Talk openly with doctors about mental health concerns to get a full treatment plan29.

By facing the stigma and mental health sides of gout, people can manage their condition better and improve their life quality31. With the right support and methods, those with gout can beat the emotional challenges and focus on their health293130.

Resources and Support

Living with gout can be tough, but you don’t have to face it alone. There are many gout resources and gout support options out there to help you. By joining the arthritis community, you can find lots of information, connect with others who get what you’re going through, and get the support you need to do well.

Healthcare providers are key for people with gout. They can give you advice on treatments, help you manage your symptoms, and create a care plan that fits you. Also, groups like the Arthritis Foundation offer educational stuff, support groups, and other help for gout patients.

Online forums and communities are great for gout support too. These places let people with gout share their stories, ask questions, and meet others who know what it’s like to live with this condition32. By being part of these groups, you can learn a lot, get inspired, and feel less alone in your fight against gout.

Keeping a healthy lifestyle is key to managing gout. Always follow your doctor’s advice on what foods and drinks to avoid, as some can make gout worse32. Also, staying active and keeping a healthy weight can lower your risk of gout problems33.

Everyone with gout is different, so it’s important to work with your healthcare team to find the best treatment for you32. By using the gout resources and connecting with the gout support network, you can play a big part in managing your gout and improving your life.

Resource Description
Arthritis Foundation Provides educational resources, support groups, and advocacy for individuals with arthritis, including gout.
American College of Rheumatology Offers information on gout diagnosis, treatment, and management, as well as a physician finder tool.
National Institute of Arthritis and Musculoskeletal and Skin Diseases A part of the National Institutes of Health, this organization provides comprehensive information on gout and other rheumatic conditions.
Gout & Uric Acid Education Society A patient-centered organization that focuses on educating the public and healthcare professionals about gout.

You’re not alone in your fight against gout. By using the gout resources and connecting with the gout support network, you can take charge of your condition and better your health323433.

Conclusion

Gout is a complex arthritis type needing a full approach to management. This includes both medical treatment and changing your lifestyle35. In the U.S., about 8 million people have gout35. Without treatment, gout can take about 10 years to show symptoms35.

By knowing the causes, symptoms, and risk factors of gout, people can work with doctors to make a treatment plan. This plan helps reduce gout attacks, prevent problems, and improve life quality36. Gout is a common cause of chronic arthritis in the U.S., affecting 1% to 4% of people36. To manage gout long-term, doctors often use urate lowering treatments35. Eating less purines and alcohol is also recommended35.

With the right mix of medicine, diet changes, weight control, and support, people with gout can manage their condition better37. Gout has become more common, rising from 2.9/1000 people in 1990 to 5.2/1000 in 1999 in the U.S37.. Genetic factors like URAT1 and SLC2A9 affect uric acid levels and gout risk37.

By being informed, making lifestyle changes, and working with doctors, people with gout can manage their condition well. This includes reducing inflammation and helping them take charge of their health and wellness.

FAQ

What is gout?

Gout is a type of arthritis that can happen to anyone. It’s known for sudden, severe pain, swelling, redness, and tenderness in one or more joints. The big toe is often affected.

What causes gout?

Gout happens when uric acid builds up in the body. This forms crystals in the joints. Uric acid comes from breaking down purines, found in the body and some foods.

Who is at risk of developing gout?

People at risk include those with certain diets, obesity, medical conditions, and family histories. Gout is more common in men aged 30-50 and in postmenopausal women.

What are the symptoms of gout?

Symptoms include sudden, severe pain, swelling, redness, and tenderness in a joint. The big toe is often affected, but any joint can be involved.

How is gout diagnosed?

Doctors diagnose gout by looking at symptoms, medical history, and doing tests. These tests include joint fluid analysis, blood tests, and imaging tests.

How is gout treated?

Treatment aims to reduce inflammation and pain quickly. This may involve NSAIDs, colchicine, or corticosteroids. For frequent attacks or joint damage, preventive medications may be given.

Can lifestyle changes help manage gout?

Yes, lifestyle changes can help manage gout. Eating less purine-rich foods and cutting down on alcohol and sugary drinks can lower uric acid levels. Staying at a healthy weight through diet and exercise also helps.

What are the potential complications of untreated gout?

Untreated gout can lead to more attacks, tophi formation, and an increased risk of kidney stones.

How can mental health be affected by gout?

Gout can cause stress and fear of future attacks, leading to more inflammation. It may also increase the risk of depression, especially with frequent flare-ups.

Where can I find resources and support for living with gout?

There are many resources for gout sufferers. These include healthcare providers, patient groups, and online forums. They offer support and information from others with similar experiences.

Source Links

  1. Gout: Symptoms, causes, and treatment – https://www.medicalnewstoday.com/articles/144827
  2. Gout – Diagnosis and treatment – Mayo Clinic – https://www.mayoclinic.org/diseases-conditions/gout/diagnosis-treatment/drc-20372903
  3. Gout – https://www.nhs.uk/conditions/gout/
  4. Gout – Symptoms and causes – https://www.mayoclinic.org/diseases-conditions/gout/symptoms-causes/syc-20372897
  5. Gout – https://www.niams.nih.gov/health-topics/gout
  6. Overview: Gout – InformedHealth.org – NCBI Bookshelf – https://www.ncbi.nlm.nih.gov/books/NBK284934/
  7. Gout | Gouty Arthritis | MedlinePlus – https://medlineplus.gov/gout.html
  8. Gout Pictures — Learn About the Symptoms, Causes, and Treatments – https://www.webmd.com/arthritis/ss/slideshow-gout
  9. No title found – https://www.arthritis.org/diseases/gout
  10. Gout – https://www.nhsinform.scot/illnesses-and-conditions/muscle-bone-and-joints/conditions/gout/
  11. Risk Factors and Gout Attacks – https://arthritis.ca/about-arthritis/arthritis-types-(a-z)/types/gout/risk-factors-and-gout-attacks
  12. Gout: Rapid Evidence Review – https://www.aafp.org/pubs/afp/issues/2020/1101/p533.html
  13. Gout / Gouty Arthritis | Symptoms, Diagnosis and Treatment | HSS – https://www.hss.edu/conditions_gout-risk-factors-diagnosis-treatment.asp
  14. Diagnosis, Treatment, and Prevention of Gout – https://www.aafp.org/pubs/afp/issues/2014/1215/p831.html
  15. No title found – https://www.arthritis.org/diseases/more-about/testing-for-gout
  16. Gout – https://www.niams.nih.gov/health-topics/gout/diagnosis-treatment-and-steps-to-take
  17. Treating Gout at Home – https://www.webmd.com/arthritis/gout-attacks-at-home
  18. No title found – https://www.arthritis.org/diseases/more-about/managing-a-gout-attack
  19. Treatment of gout flares – UpToDate – https://www.uptodate.com/contents/treatment-of-gout-flares
  20. Gout: Complications and long-term management – https://www.medicalnewstoday.com/articles/gout-complications
  21. Patient education: Gout (Beyond the Basics) – https://www.uptodate.com/contents/gout-beyond-the-basics
  22. Can the foods you eat help to control gout? – https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/gout-diet/art-20048524
  23. Lifestyle Changes may Help Lower Risk of Gout Attacks – Mayo Clinic News Network – https://newsnetwork.mayoclinic.org/discussion/lifestyle-changes-may-help-lower-risk-of-gout-attacks/
  24. No title found – https://www.arthritis.org/health-wellness/healthy-living/nutrition/healthy-eating/gout-diet-dos-and-donts
  25. Gout Complications: Kidney Stones, Heart Disease, and 7 More to Know – https://www.healthline.com/health/gout-complications
  26. Gout – Gout – Merck Manual Consumer Version – https://www.merckmanuals.com/home/bone,-joint,-and-muscle-disorders/gout-and-calcium-pyrophosphate-arthritis/gout
  27. Gout and Pseudogout: Practice Essentials, Background, Pathophysiology – https://emedicine.medscape.com/article/329958-overview
  28. Gout – https://versusarthritis.org/about-arthritis/conditions/gout/
  29. Gout, anxiety, and depression in primary care: a matched retrospective cohort study – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487555/
  30. Stress and Gout: What’s the Connection? – https://www.healthline.com/health/can-stress-and-anxiety-cause-gout
  31. High Risk of Depressive Disorders in Patients With Gout: A Nationwide Population-Based Cohort Study – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5291635/
  32. Gout – https://rheumatology.org/patients/gout
  33. Gout – https://info.health.nz/conditions-treatments/bones-and-joints/gout/
  34. Gout Treatment – https://arthritis.ca/about-arthritis/arthritis-types-(a-z)/types/gout/gout-treatment
  35. Executive Summary – Management of Gout – https://www.ncbi.nlm.nih.gov/books/NBK356146/
  36. Gout – StatPearls – NCBI Bookshelf – https://www.ncbi.nlm.nih.gov/books/NBK546606/
  37. New insights into the epidemiology of gout – https://academic.oup.com/rheumatology/article/48/suppl_2/ii2/1773077