Hypersalivation or hypersialosis is the excessive production of
saliva.[3] It has also been defined as increased amount of saliva in the mouth, which may also be caused by decreased clearance of saliva.[4]
Hypersalivation can contribute to
drooling if there is an inability to keep the mouth closed or
difficulty in swallowing (dysphagia) the excess saliva, which can lead to excessive spitting.
Hypersalivation also often precedes
emesis (vomiting), where it accompanies
nausea (a feeling of needing to vomit).[5]
Causes
Excessive production
Conditions that can cause saliva overproduction include:[4]
Gastroesophageal reflux disease, in such cases specifically called a water brash (a loosely defined lay term), and is characterized by a sour fluid or almost tasteless saliva in the mouth[7]
Gastroparesis (main symptoms are nausea, vomiting, and reflux)
^Clark], [edited by Parveen Kumar, Michael (2005). Kumar & Clark clinical medicine (6th ed.). Edinburgh: Elsevier Saunders. p. 266.
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