Symptom: Breath odor

Breath odor: Unpleasant or excessive breath odor.
Detailed cause information for symptom: Breath odor:

Possible causes of symptom: Breath odor (81 conditions)

Medications or substances causing symptom: Breath odor (6 listings)

Medical conditions causing symptom: Breath odor (16 conditions)

Medical articles on symptoms: These general medical articles may be of interest:

Symptoms of the Silent Killer Diseases
Symptoms and Medical Malpractice
Medical mistakes and their rates, causes and prevention
Deaths and sudden death

Breath odor type of: Breathing symptoms (165), Breath symptoms (16), Odor symptoms (23)
Symptoms: symptom center, symptom groups, symptom descriptions

Possible causes of symptom: Breath odor: The following medical conditions are some of the possible causes of Breath odor as a symptom. There are likely to be other possible causes, so ask your doctor about your symptoms.

Practical reasons for bad breath odor include:
- Alcohol
- Smoking
- Psychogenic halitosis - anxiety about halitosis often without actually having it.
Halitosis
Dental conditions
- Poor dental hygiene
- Dental disorders
- Tooth decay
- Dental plaque
- Tooth abscess
- Tooth infections (type of Dental conditions)
- Gingivitis
- Gum disease
- Periodontitis
- Dentures
Mouth conditions
- Dry mouth (type of Dental conditions)
- Mouth breathing (see Breathing symptoms)
- Inadequate saliva
- Mouth ulcers
- Oral cancer
- Pharynx cancer
- Larynx cancer
Throat conditions (type of Neck conditions)
- Reflux
- GERD
- Throat infection (see Sore throat)
- Tonsillitis
- Chronic tonsillitis
- Adenoiditis
- Pharyngeal pouch
- Achalasia
- Esophageal stricture
Nasal conditions
Certain infections of the respiratory system including:
- Respiratory tract infections (type of Nosocomial infections)
- Mouth infection (see Mouth infections)
- Lung infection
- Sinusitis
- Postnasal drip
- Catarrh
Certain lung diseases
- Certain chronic lung diseases
- Pyorrhea alveolaris
- Bronchiectasis
- Cystic fibrosis
- Lung abscess
- Tuberculosis
Certain metabolic or hormonal disorders:
- Liver disorders
- Liver failure - causes sweet-smelling breath.
- Acidosis
- Diabetes
- Diabetic ketoacidosis - a life-threating condition causing a characteristic fruity or acetone breath odor.
- Uremia - breath smells urine-like or ammonia-like.
- Kidney failure - causing uremia and ammonia-like or urine-like breath odor.
Stomach disorders
Certain types of poisoning
Certain drugs

Medications or substances causing Breath odor: The following drugs, medications, substances or toxins are some of the possible causes of Breath odor as a symptom. This list is incomplete and various other drugs or substances may cause your symptoms. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.

Any drugs that dry the mouth, nose or reduce salivation

Antihistamines
Certain sinus disorder drugs
Certain antidepressants
Paraldehyde
Disulfiram

Conditions listing symptoms: Breath odor: The following list of conditions have 'Breath odor' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.