Intense joint pain
Pain may begin suddenly and can become severe within hours.
A blood test may show high uric acid before a person feels anything. Symptoms are more likely when urate crystals contribute to gout or when uric acid is involved in kidney stones.
Uric acid is a waste product formed when the body breaks down purines. Hyperuricemia means the level in the blood is higher than the laboratory or clinician considers expected. Many people with hyperuricemia never develop gout.
Gout is an inflammatory arthritis caused by monosodium urate crystals. A clinician may consider your symptoms, examination, medical history, blood tests, imaging, and sometimes joint-fluid testing before making a diagnosis.
Flares often affect one joint at a time, but patterns vary. The big toe is common, and ankles, knees, feet, hands, wrists, and elbows can also be affected.
Pain may begin suddenly and can become severe within hours.
Skin over the joint may appear red, purple, or darker than usual depending on skin tone.
The joint can feel hot, look swollen, and become very tender.
Pain and swelling may make walking or moving the joint difficult.
Severe pain may ease while tenderness or stiffness continues for days or longer.
Firm deposits called tophi can develop under the skin in longstanding gout. They need medical evaluation.
Kidney stones have several possible causes. Uric acid is only one of them, so symptoms cannot identify the stone type.
Pain may spread toward the lower abdomen or groin and come in waves.
Urine may look pink, red, or brown. Visible blood should be assessed.
Pain when urinating, frequent urges, cloudy urine, or difficulty passing urine can occur.
Severe stone pain can be accompanied by nausea or vomiting.
A joint infection can look similar to gout and requires prompt treatment. Seek urgent medical assessment if a painful, hot, swollen joint occurs with fever, chills, feeling very unwell, a recent wound or surgery, or a weakened immune system.
Last editorial review: September 9, 2026. Source links are provided so readers can check the underlying guidance.
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