Bad breath is termed Halitosis. This is classified as;
1) Oral (mouth)
3) Other causes.
Although halitosis has multifactorial origins, the source of 90% of cases is the oral cavity.
Poor oral hygiene, food debris, and dental bacterial plaque accumulate on the teeth and tongue and cause caries and periodontal diseases like gingivitis and periodontitis. The inflammation of gingival and periodontal tissues creates typical sources for oral malodors and plaque-related periodontal disease can increase the severity of halitosis.
Besides periodontal conditions, untreated deep carious lesions also create the retention area for food debris and dental bacterial plaque and may cause halitosis/bad breath. Another important factor in halitosis is the reduced flow of saliva.
Respiratory system problems, gastrointestinal disease, hepatic disease, hematological or endocrine system disorders, and metabolic conditions can all be the causes of halitosis.
Gastrointestinal diseases can cause halitosis. Pyloric stenosis, duodenal obstruction, pharyngeal pouches, Zenker's diverticulum, hiatal hernia cause food retention, and bad breath. Sinusitis can also cause halitosis.
Dietary products such as garlic, onions, spiced foods cause transient unpleasant odor or halitosis. Drugs such as alcohol, tobacco, betel, solvent abuse, chloral hydrate, nitrites and nitrates, etc may create bad breath.
I wish your symptoms resolve soon.
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