Sounds like what the doctors thought I had (but I didn't). It is called C. Diff., for short, and can cause persistent diarrhea, vomiting and an elevated white blood cell count. . . Most people take a course of antibiotics and that cures it.. . With some people it is persistent and hangs on.. . My suggestion is that you ask your doctor what the diagnosis is and why he prescribed antibiotics for diarrhea!. . BTW during any course of antibiotics you should take acidophilus because antibiotics kill off the good bacteria in your gastrointestinal tract. That is what causes the diarrhea when one takes antibiotics. A very good, but more expensive acidophilus or probiotic, is Culturelle.. . I recently took this during a course of antibiotics and had no diarrhea! That is a first for me. I was taking it 3 times a day, in between the doses of antibiotics. I am continuing to take it after I've stopped the antibiotics as directed on the Culturelle package.. . Culturelle is one of the most potent probiotics on the market. For more information check out the website below.