The definition of bad breath, or halitosis, is an unpleasant odor of the mouth. It can occur on occasion, or it can be a chronic condition. It may be caused by foods a person eats, poor oral hygiene, medical conditions, or other factors.

What are the symptoms of bad breath?

Others may notice someone has bad breath before they do, so they may tell him or her about their bad breath or give them a larger than normal personal space. The most obvious sign or symptom is noticing an unpleasant odor coming from the mouth.

Other symptoms of bad breath include

- unpleasant or sour taste or changes in taste,
- dry mouth,
- coating on the tongue.

What are the causes of bad breath?

There are many causes for bad breath; some common causes are listed below.

- Food
- Tobacco products
- Poor dental hygiene
- Health problems
- Dry mouth
- Mouth infections
- Dentures or braces
- Medications
-Morning breath
- Other causes of bad breath: Objects stuck in the nose (usually in children), alcoholism, and large doses of vitamin supplements may also cause bad breath.

How is bad breath treated?

- Brush and floss teeth regularly. Remember to brush the tongue, too. This can help with bad breath caused by foods a person has eaten.
- See a dentist regularly to ensure dentures or braces are properly fitted and cleaned.
- Quit smoking or using chewing tobacco.