Causes and treatment of bad breath?

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Hello doctor,
My breath has a bad odor. I went to the dentist, but couldn't find the cause. So the doctor told me the cause and treatment of bad breath? I have a history of gastritis and acid reflux. Thank you doctor.
Anonymous customer
Answer
Answered by Master, Doctor Le Thi Bao Ngoc - Department of Medical Examination & Internal Medicine, Vinmec Da Nang International General Hospital.
Hello,
With the question “Cause and treatment of bad breath? ", the doctor would like to answer as follows:
Bad breath can be caused by dental disease or caused by gastroesophageal reflux.
If you go to the dentist without any abnormalities, you should see a gastroenterologist to see if you have symptoms of gastroesophageal reflux disease and advise on how to treat. Your doctor will examine you and decide if you need a gastroscopy. You need to see a doctor immediately if you have symptoms such as weight loss, vomiting, abdominal pain.
If you still have questions about bad breath, you can go to the hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!