Classification
Halitosis has been classified by location of the cause of the malodor and by aetiology. The primary subdivision is between Genuine halitosis and pseudo halitosis.
Where halitosis is genuine, this can be subdivided according location, for example intra-oral halitosis (within the mouth) and extra-oral halitosis (outside the mouth). Intraoral halitosis is also known as oral malodor and accounts for some 80-90% of genuine halitosis cases.
Genuine halitosis can also be thought of as either physiological, or pathological.
- Genuine Halitosis
- oral malodor (intra-oral halitosis)
- Extraoral halitosis
- Extra-oral Blood borne halitosis
- Extra-oral non-blood borne halitosis
- Upper respiratory tract (ENT) causes
- Lower respiratory tract causes
- Gastrointestinal halitosis
- Pseudohalitosis
- delusional halitosis
- olfactory halucinations/neurosensory disturbance
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