Bitter mouth with bad taste, may be oral diseases, may also be due to throat diseases, gastrointestinal diseases.
1. Oral diseases: such as dental caries, pulpitis, gingivitis, wisdom teeth, pericoronitis, periapical periodontitis and other diseases, may lead to swelling of the gums, the local secretion of fluid abnormalities, which will lead to the symptoms of a bitter taste in the mouth.
2. Pharyngeal diseases: for example, acute pharyngitis, chronic pharyngitis, tonsillitis, herpes pharyngitis, etc., which may also lead to a bitter taste in the mouth.
3. Intestinal diseases: for example, gastritis, peptic ulcer, cholecystitis and other diseases may affect the secretion of digestive juices, resulting in bitter mouth with bad taste.
There may be other reasons for the bitter taste in the mouth, so you need to go to the hospital for examination to find out the cause of the disease.