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Published on: 3/17/2025

What Conditions Might Excess Saliva Be a Symptom Of?

Excess saliva can be a sign of conditions that affect the nerves, mouth, or salivary glands, like certain neurological diseases or burning mouth syndrome.

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Explanation

When you notice more saliva than usual, it might be a symptom of underlying conditions that change how your body makes or handles saliva. For example, people with chronic neurological conditions such as Parkinson’s disease, amyotrophic lateral sclerosis (ALS), or other motor disorders can have trouble controlling saliva, which leads to what we call sialorrhea. This happens because these conditions can make it harder for the muscles and nerves to keep saliva in the mouth. Another condition is burning mouth syndrome, where people experience a burning feeling in their mouth along with changes in saliva, sometimes noticing extra saliva. In some cases, diseases that directly affect the salivary glands can also change how much saliva is produced or alter its makeup. These changes can occur because the glands might become overactive or not work as well as they should. If you find that excess saliva is causing discomfort or making it hard to eat or speak, it can be helpful to talk with a healthcare provider. They can check if one of these underlying conditions is present and suggest ways to manage the symptoms.

(References)

  • Morgante F, Bavikatte G, Anwar F, Mohamed B. The burden of sialorrhoea in chronic neurological conditions: current treatment options and the role of incobotulinumtoxinA (Xeomin®). Ther Adv Neurol Disord. 2019 Nov 28;12:1756286419888601. doi: 10.1177/1756286419888601. PMID: 31819763; PMCID: PMC6883364.

  • Canfora F, Calabria E, Spagnuolo G, Coppola N, Armogida NG, Mazzaccara C, Solari D, D'Aniello L, Aria M, Pecoraro G, Mignogna MD, Leuci S, Adamo D. Salivary Complaints in Burning Mouth Syndrome: A Cross Sectional Study on 500 Patients. J Clin Med. 2023 Aug 26;12(17):5561. doi: 10.3390/jcm12175561. PMID: 37685630; PMCID: PMC10488611.

  • Proctor GB, Shaalan AM. Disease-Induced Changes in Salivary Gland Function and the Composition of Saliva. J Dent Res. 2021 Oct;100(11):1201-1209. doi: 10.1177/00220345211004842. Epub 2021 Apr 17. PMID: 33870742; PMCID: PMC8461045.

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