My daughter has suffered (and still does occasionally) from this. Most of the time it is just an irritation due to not wiping well enough. Start with a yeast infection cream (i.e. monistat) combined with epsom salt baths every couple of days, and no more bubble baths as this is one of the biggest causes of this type of irritation. If it does not clear up within a week, then you should take her to her pediatrician, because it may be something worse. The first remedy has worked for me all but one time. Shortly after we got here, we treated my daughter with the initial remedy and cranberry juice for a week and the symptoms went away, then about 2 weeks later they reappeared. We did this twice, because our primary pediatrician did not have any appointments available and it would go away for a long enough period we thought we had gotten rid of it. When it happened for the third time, I tried againg to get an appointment but they still did not have any, so I took her to an urgent care clinic. Well we figured it was a UI but it turned out that it had moved up into her bladder. The Dr said that if we had let it go much longer it would have moved up into her kidneys and that type of infection is very difficult to treat. So if the basic yeast infection/warm bath treatment doesn't work. Get her in.