M10: Gout

M10.3: Gout due to impairment of renal function

Gout due to impairment of renal function, also referred to as renal gout, is a specific type of gout where the kidney's ability to filter out uric acid is compromised. High levels of uric acid build up, forming sharp, needle-like urate crystals in a joint or the surrounding tissue. These crystals cause severe, sudden instances of pain, swelling, redness, and heat, most commonly seen in the big toe but can affect other joints or areas. The problem often starts overnight. Gradual kidney damage can lead to more frequent and severe flare-ups. Renal gout can be due to either uncontrolled gout over many years or an underlying kidney disorder that impairs renal function. The exact progression of the disease can vary, but it's often episodic with painful flare-ups interchanged with symptom-free periods. Increased uric acid can also lead to kidney stones.