Chronic yeast infections keep coming back, even after being treated. The causes of recurrence might be: An unusual type of yeast that may be resistant to certain anti-fungal medications, such as candida glabrata or candida tropicalis Undiagnosed diabetes Re-infection from a sexual partner When a person has a chronic yeast infection it is important to practice prevention, and also to change the internal environment of the body so that yeast does not grow. Some ways to prevent chron