Gout is a silent killer, but its symptoms are unmistakable
In short: Gout, a form of inflammatory arthritis, strikes suddenly with excruciating pain. It begins in the big toe, but can spread to other joints. The culprit? Uric acid crystals. But why does this happen? And how can it be managed? Swipe to uncover the science behind this painful condition.
Gout is a type of inflammatory arthritis that causes sudden, severe pain in joints, often starting in the big toe. The condition is driven by the buildup of urate crystals, which form when uric acid levels in the blood are too high. Uric acid is a byproduct of purine metabolism, a process that occurs as the body breaks down DNA and RNA. The body constantly produces and removes uric acid through urine, but imbalances can lead to crystal formation.
The primary cause of gout is the kidney’s reduced ability to excrete uric acid. This can be inherited, or it can result from kidney disease, medications like diuretics, alcohol use, or lead poisoning. Additionally, increased urate production may occur in conditions with high cellular turnover, such as obesity, or from overconsumption of purine-rich foods. However, diet alone is rarely the sole cause.
When uric acid levels are too high, it crystallizes in joints, especially in cooler areas like the extremities. These crystals trigger inflammation, leading to pain, swelling, and redness. Over time, urate deposits can form tophi—hard lumps under the skin that may limit joint movement and cause deformities. Gout also increases the risk of osteoarthritis and kidney stones, as urate crystals can block urine flow.
Diagnosis requires identifying urate crystals in synovial fluid, as blood tests alone are not sufficient. Treatment for acute attacks includes anti-inflammatory drugs like NSAIDs, which can also reduce the frequency of attacks. For long-term management, medications that lower uric acid levels or increase its excretion may be used to dissolve tophi and prevent joint damage.
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Sources
- Summary by Intellect · source: Gout, Pathophysiology, Causes, Symptoms, Risk Factors, Diagnosis and Treatments, Animation.
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