【Abstract】 A 21-year-old woman experienced serious pain on left renal area the previous night, and diagnosed as spasm of the ureter. The patient was treated with nifedipine 10mg three times and ofloxacin 0.2g twice daily in clinic. She complained of urinary frequency at night, without other discomforts after the medication. So no treatment was started and only the outflow and frequency of urine were observed. 5 days later, her urinary outflow was 100-300ml a time, 7-10 times a day, including 3-5 times at night. Nifedipine was discontinued while ofloxacin was continued. The frequent micturition was decreased obviously, and resolved in the evening.更多还原