Mild thrush is often treated with a course of antifungal medication. Symptoms normally go away within a week or two. If you experience recurring cases of thrush, your treatment may need to be extended. Thrush can also become a chronic problem if it reoccurs frequently. In this case, consult with your doctor about changing your dosage schedule or switching over to another antifungal drug. Thrush is usually not serious. It's most common among newborns and people who are undergoing chemotherapy or radiation therapy for cancer. However, in these cases, thrush may cause serious problems if it is not treated promptly. Seek medical help if you experience any of the following: pain when swallowing, trouble breathing, fever, sore throat, change in voice quality, persistent cough, white patches on tongue or inside of mouth. If you have diabetes, thrush can be extremely difficult to treat. Because drugs used to treat diabetes can also kill off healthy bacteria in your mouth, they make thrush symptoms worse. If you are taking medications for diabetes, ask your doctor what role, if any, natural products such as cinnamon might have in treating your condition. People with HIV/AIDS are at high risk for developing oral candidiasis, or yeast infections. The virus that causes AIDS also attacks the body's immune system, making it easier for other infections to take hold.