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Published on: 8/20/2026
Drooling from the corner of your mouth is often caused by excess saliva production or reduced control over swallowing. Common causes include burning mouth syndrome, sleep position, sinus infections, acid reflux, and neurological conditions such as Parkinson's disease, stroke, or Bell's palsy. Certain medications and dental issues can also trigger drooling.
Because the causes range from mild to serious, identifying the underlying reason is key to finding the right treatment. Take a free, instant, online symptom check to better understand what may be causing your drooling and get personalized guidance on your next steps — no signup required.
Reviewed for medical accuracy: 07/15/2026
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Sometimes, you might feel as if saliva is coming out of the corner of your mouth more than usual. This can happen when your body makes more saliva than normal or when the muscles around your mouth do not close tightly enough to keep the saliva inside.
For instance, in burning mouth syndrome, you might experience pain, burning, and extra saliva along with a feeling of drooling. In other cases, conditions that affect your nerves and muscles—like Parkinson's disease—can make it harder for you to control saliva, leading to drooling. Certain medications or even other salivary secretory problems may also play a role. These issues change how your body produces and manages saliva.
If you are often bothered by this sensation or notice other symptoms, you can use our free symptom checker to get personalized insights about what might be causing your symptoms. It's also a good idea to speak with a healthcare provider who can look into your symptoms and help find ways to manage or treat the problem.
(References)
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.
Miranda-Rius J, Brunet-Llobet L, Lahor-Soler E, Farré M. Salivary Secretory Disorders, Inducing Drugs, and Clinical Management. Int J Med Sci 2015; 12(10):811-824. doi:10.7150/ijms.12912.
Polychronis S, Nasios G, Dardiotis E, Messinis L, Pagano G. Pathophysiology and Symptomatology of Drooling in Parkinson's Disease. Healthcare (Basel). 2022 Mar 11;10(3):516. doi: 10.3390/healthcare10030516. PMID: 35326994; PMCID: PMC8951596.
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