Yeast infections typically last about a week when treated properly with antifungal medication. Mild infections may clear up in as few as 3 days, sometimes even without treatment, but this is rare. Moderate to severe infections usually take 1 to 2 weeks to resolve with appropriate treatment. It is important to complete the full course of medication to prevent recurrence. More severe infections or recurrent cases may require longer or more intensive treatment, sometimes up to several weeks. If symptoms persist beyond two weeks or keep returning, medical evaluation is recommended to rule out other conditions or underlying causes