Can chronic kidney disease cause gout?

When uric acid builds up, needle-shaped crystals can form in and around a joint. The immune response to those crystals produces the sudden pain, swelling, warmth and redness of a gout flare.

The kidneys help clear uric acid from the blood. Chronic kidney disease can reduce that clearance, while some medicines and other health conditions may add to the tendency for uric acid to accumulate.

Gout often affects one joint during a flare, with the big toe, ankle and knee among possible sites. A raised uric acid result alone does not prove that joint pain is gout, and a result can be misleading during an active flare. The pattern, examination and sometimes a sample of joint fluid help distinguish gout from infection or another arthritis.

Contact a clinician early when a flare starts so treatment can be selected with your kidney function and other medicines in mind. Do not start an over-the-counter anti-inflammatory medicine without checking that it is suitable, because some options can worsen kidney function or interact with prescribed treatment.

Rest the painful joint, use a wrapped cold pack for comfort and keep taking regular medicines unless your prescriber advises a change. If gout recurs, discuss a long-term uric-acid-lowering plan. Such treatment is adjusted carefully and should not be stopped simply because a flare occurs.

Get urgent medical assessment for a first episode of a suddenly hot, red and swollen joint, particularly with fever, chills, a wound or recent procedure. Joint infection can resemble gout and requires prompt treatment.

Seek immediate advice if you are passing much less urine, cannot keep fluids or medicines down, become confused or very drowsy, or develop severe weakness. These features may relate to worsening illness or kidney function rather than the joint alone.

Ask how your kidney function changes the choice and dose of flare treatment, whether any current medicine raises uric acid, and how monitoring will work if long-term therapy is started. Confirm which pain medicines you should avoid and whom to contact when another flare begins.