Treatment can vary from person to person. The duration of treatment depends on the skin condition. Nongenital Warts Clinical Presentation History Physical Examination If your skin reacts badly to aldara, your doctor. How long does it take for fluorouracil cream to work on warts . After a course of 5 fu cream, the skin will become inflamed which consists of redness, soreness, oozing, crusts and scabs. Tolerability and patient satisfaction were excellent. Most patients use the cream twice a day for 4 weeks from start to finish. You can apply the medicine with a. The average time to cure occurred at 9 weeks of treatment. The usual duration of therapy is 2 to 4 weeks, until the inflammatory response reaches the erosion state, at which time treatment is discontinued. Topical 5fu/sa compared to placebo shows 46% versus 19% cure rate. The treatment can be repeated after a couple of months for any remaining areas of sun damage. After completing the treatment course this r...