CausesBy Mayo Clinic staff
Excessive saliva can be caused by either an increase in your body's production of saliva or a decrease in your ability to swallow or keep saliva in your mouth.
Causes of increased saliva production
- Dentures that are new or don't fit well
- Infection in your mouth or throat
- Medications, such as clonazepam (Klonopin), clozapine (Clozaril, Fazaclo ODT), pilocarpine (Salagen) and carbidopa-levodopa (Parcopa, Sinemet)
- Stomatitis (an inflammation of mucous membranes in your mouth)
Rarer causes of increased saliva production include:
Causes of a decreased ability to swallow or to retain saliva in your mouth
Conditions that affect your muscle coordination or the function of your oral cavity also may decrease your ability to swallow or to retain saliva in your mouth. These conditions include:
Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.
- Young CA, et al. Treatment for sialorrhea (excessive saliva) in people with motor neuron disease/amyotrophic lateral sclerosis. Cochrane Database of Systematic Reviews. 2011;CD006981. http://www2.cochrane.org/reviews. Accessed Sept. 7, 2011.
- The head and neck. In: LeBlond RF, et al. DeGowin's Diagnostic Examination. 9th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/content.aspx?aID=3661165&searchStr=sialorrhea#3661165. Accessed Oct. 7, 2011.
- Prenatal care. In: Cunningham FG, et al. Williams Obstetrics. 23rd ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/content.aspx?aID=6052949&searchStr=sialorrhea#6052949. Accessed Oct. 7, 2011.
- Langmore SE, et al. Disorders of swallowing: Palliative care. Otolaryngologic Clinics of North America. 2009;42:87.
- Fairhurst CB, et al. Management of drooling in children. Archives of Disease in Childhood - Practice and Education Edition. 2011;96:25.
- Praharaj SK, et al. Amisulpride improved debilitating clozapine-induced sialorrhea. American Journal of Therapeutics. 2011;18:e84.
- Classification of viruses. In: Long SS, et al. Principles and Practice of Pediatric Infectious Diseases Revised Reprint. 3rd ed. Philadelphia, Pa.: Churchill Livingstone Elsevier. 2009. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7020-3468-8..50234-0--cesec5&isbn=978-0-7020-3468-8&uniqId=286401642-9#4-u1.0-B978-0-7020-3468-8..50234-0--cesec5. Accessed Oct. 8, 2011.
- Maheshwari A, et al. Digestive system disorders. In: Kliegman RM, et al. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-1-4377-0755-7..00096-8&isbn=978-1-4377-0755-7&sid=1217922271&uniqId=286401642-5#4-u1.0-B978-1-4377-0755-7..00096-8--s0015. Accessed Oct. 8, 2011.
- Khan WU, et al. Botulinum toxin A for treatment of sialorrhea in children. Archives of Otolaryngology and Head and Neck Surgery. 2011;137:339.
- Parkinson's disease - Nonpharmacologic treatments. Worldwide Education and Awareness for Movement Disorders. http://www.wemove.org/par/par_nphm.html. Accessed Oct. 8, 2011.
- Anderson CF (expert opinion). Mayo Clinic, Rochester, Minn. Oct. 20, 2011.