A recurrent female bladder infection is defined as having three or more infections in a year, and most commonly occurs in young, sexually active women and in those over the age of 55.
If you suffer from recurrent UTI's, then it is important to discuss this with your doctor. Different treatment options are available. Some women find that having a 3-day course of standby antibiotics (such as Trimethoprim or Nitrofurantoin) is useful, so they can be started without delay when necessary.
If your recurrences are very frequent, then another option is taking a course of low-dose antibiotics every night, often for six months. This acts as a preventative measure, reducing the number of episodes, but may not stop them completely. If you develop an infection while taking these preventative antibiotics, then it is usually caused by a resistant bacteria. A urine test should be arranged by your doctor, and you will usually require an alternative antibiotic.