Classification and external resources
DiseasesDB 20764
MedlinePlus 003048
eMedicine ent/629
MeSH D012798

Hypersalivation (also called ptyalism[1] or sialorrhea[2]) is excessive production of saliva. It has also been defined as increased amount of saliva in the mouth, which may also be caused by decreased clearance of saliva.[3]

Hypersalivation can contribute to drooling if there is an inability to keep the mouth closed or in difficulty in swallowing the excess saliva (dysphagia).

Hypersalivation also often precedes emesis (vomiting), where it accompanies nausea (a feeling of needing to vomit).[4]


  • Causes 1
    • Excessive production 1.1
    • Decreased clearance 1.2
  • Treatment 2
  • References 3


Excessive production

Conditions that can cause saliva overproduction include:[3]

Medications that can cause overproduction of saliva include:[3]

Toxins that can cause hypersalivation include:[3]

Decreased clearance

Causes of decreased clearance of saliva include:[3]


Hypersalivation is optimally treated by treating or avoiding the underlying cause.[3] Mouthwash and tooth brushing may have drying effects.[3]


  1. ^ thefreedictionary.com > ptyalism Citing:
    • Dorland's Medical Dictionary for Health Consumers. 2007
    • Mosby's Medical Dictionary, 8th edition. 2009
    • Saunders Comprehensive Veterinary Dictionary, 3 ed. 2007
  2. ^ thefreedictionary.com > sialorrhea Citing:
    • The American Heritage Dictionary of the English Language, Fourth Edition, Updated in 2009.
  3. ^ a b c d e f g Medscape > Hypersalivation By Erica Brownfield. Posted: 05/19/2004
  4. ^ Clark], [edited by Parveen Kumar, Michael (2005). Kumar & Clark clinical medicine (6th ed.). Edinburgh: Elsevier Saunders. p. 266.  
  5. ^ thefreedictionary.com > water brash Citing: Dorland's Medical Dictionary for Health Consumers. 2007