Causes of bad breath - Halitosis .. Psychological disorders. Fasting. Mouth or nose infections. Poor oral health care. Hepatic or renal insufficiency. Diabetes mellitus. Gastroenterology

Halitosis:
Bad breath occurs because of several factors:
the reasons:
Poor oral health care.
- Mouth or nose infections.
Famine.
- Some types of food.
- Fasting.
- Drugs.
- Psychological disorders of origin.
- systemic disorders such as respiratory respiratory infections, hepatic or renal insufficiency, diabetes mellitus, gastrointestinal diseases.