Breath Odor: Causes, Symptoms & Diagnosis
Advertisement
Let's see if we can figure out what's causing your bad breath.
Select additional symptoms and we'll narrow your results.

What causes bad breath? 16 possible conditions

Breath odor affects everyone at some point. Bad breath is also known as halitosis or fetor oris. Odor can come from the mouth, teeth, or as a result of an underlying health problem. Bad breath odor can be a temporary problem or a chronic condition.  Read more

See a list of possible causes in order from the most common to the least.

1

Gum Disease (Gingivitis)

A severe case of gingivitis is marked by swollen, bleeding gums and swollen lymph nodes around the jaw, and neck.

Read more »

2

Tooth Decay

A cavity, also called tooth decay, is a hole that forms in your tooth. Cavities start small and gradually become bigger when they're left untreated.

Read more »

3

Enlarged Adenoids

Adenoids are small tissues located at the back of the throat. They are similar to the tonsils, and located right above them. Both adenoids and tonsils are part of the immune system. Adenoids are present at birth, an...

Read more »

4

Pharyngitis

Pharyngitis is inflammation of the pharynx, which is in the back of the throat. It's most often referred to simply as "sore throat" and is very common.

Read more »

5

Sinus Infections (Sinusitis)

A sinus infection, or sinusitis, is a common condition that affects 30 million people in the United States each year, according to the National Institute of Allergy and Infectious Diseases. The infection occurs whe...

Read more »

6

Bronchiectasis

Bronchiectasis causes symptoms like chronic coughing, coughing up blood, wheezing, and shortness of breath. Read about treatment options.

Read more »

7

Alcoholism

Alcoholism is also known as alcohol dependence. It occurs when you drink so much over time that your body becomes dependent on or addicted to alcohol. When this happens, alcohol use becomes the most important thing i...

Read more »

8

Foreign Body in the Nose

A foreign body in the nose means that an object is present in the nose when it's not naturally supposed to be there. This often happens in small children.

Read more »

9

Kidney Failure

Your body becomes overloaded with toxins if your kidneys can't do their regular job. This can lead to kidney failure and even be life-threatening.

Read more »

10

Getting a Handle on Aspiration Pneumonia

This condition is considered a medical emergency. Urgent care may be required.

Aspiration pneumonia is an inflammation (usually due to an infection) of your lungs and bronchial tubes that occurs after you inhale foreign matter.

Read more »

11

Chronic Kidney Disease

Chronic kidney disease (CKD) is the progressive and irreversible destruction of the kidneys. The most common causes of CKD are high blood pressure and diabetes.

Read more »

12

Intestinal Obstruction

If your small or large intestine becomes blocked, fluid and digested food cannot move through. This can cause bloating, stomach cramps, and burping.

Read more »

13

Stomach Cancer (Gastric Adenocarcinoma)

Stomach cancer occurs when cancerous cells form in the stomach lining. Because it's difficult to detect, it's often not diagnosed until it's more advanced.

Read more »

14

Absence of Gamma Globulin in Blood

Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.

Read more »

15

Dry Mouth

Dry mouth, or xerostomia, is a condition that occurs when saliva glands in the mouth don't work properly, causing a parched feeling in the mouth. Some possible causes are dehydration, pain relievers, stress, appetit...

Read more »

16

Diabetes Overview

Diabetes is a group of chronic metabolic diseases caused by defects in insulin production or function. Advanced diabetes may cause stomach pain, nausea, dizziness, and cramps.

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
Advertisement
Advertisement
Advertisement