Gout primary vs secondary ratio: which is correct?

• A. Primary 90%, Secondary 10%
• B. Primary 70%, Secondary 30%
• C. Primary 50%, Secondary 50%
• D. Primary 99%, Secondary 1%

Answer: (A)

Most gout is primary, meaning it occurs without an identifiable secondary cause. In clinical practice, about nine-tenths of gout cases fall into this category, with the remaining roughly one-tenth being secondary gout, which is linked to another condition or a medication that raises uric acid or decreases its excretion. Primary gout reflects inherent metabolic factors and genetic predisposition in urate handling, whereas secondary gout appears when an underlying issue—such as renal impairment, conditions with high cell turnover, or diuretic or other drug use—drives hyperuricemia. That’s why the bias toward a 90%/10% split best matches what is typically seen, and other ratios imply a distribution that isn’t consistent with the usual pattern.