Dry Mouth
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Try one of these related symptoms.
My mouth is dry
Thirsty due to dry mouth
Lips are dry
Dry tongue
My mouth feels excessively dry
No saliva
About the Symptom
Dry mouth is a condition where the salivary glands in the mouth don't produce enough saliva to keep the mouth moist.
When to See a Doctor
Seek professional care if you experience any of the following symptoms
- Fever
- double vision
- Easy fatiguability
- Seizure attack
- Abnormal sensation (tingling, prickling)
- Unexplained weight loss of 5% or more in 1 month
- Recent weight loss
- Numbness / sensory disorder
- Gross hematuria
Possible Causes
Generally, Dry mouth can be related to:
- Tetany
Tetany is a condition involving involuntary muscle contractions and overly stimulated peripheral nerves. It is caused by electrolyte imbalances, most often low blood calcium levels.
- Watery Diarrhea, Hypokalemia, and Achlorhydria (WDHA) Syndrome
WDHA syndrome, which stands for watery diarrhea, hypokalemia, and achlorhydria, is a rare condition caused by an excess of vasoactive intestinal polypeptide (VIP) secreted by certain tumors. VIP is both a neuromodulator and a neurotransmitter that dilates blood vessels, regulates smooth muscle activity, cell secretion, and blood flow in the gastrointestinal tract.
- Sheehan's Syndrome
It is also known as postpartum hypopituitarism. This condition occurs due to blood loss or low blood pressure during childbirth, leading to a lack of oxygen and damage to the part of the brain responsible for hormone production. This results in low levels of these hormones in the body.
- Diabetes Insipidus
- Hyperparathyroidism
- Angular Cheilitis
- Hypopituitarism
Related Serious Diseases
Sometimes, Dry mouth may be related to these serious diseases:
- Hypernatremia
Hypernatremia refers to having too much sodium in the blood, which is essential for the body's proper functioning.
- Dehydration
Hyperosmolar Hyperglycemic State (HHS)
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Are you experiencing a dry mouth?
- When did you first notice your dry mouth?
- How often do you have a dry mouth?
- How is your dry mouth now?
- How severe is your dry mouth?
Reviewed By:
Unnati Patel, MD, MSc (Family Medicine)
Dr.Patel serves as Center Medical Director and a Primary Care Physician at Oak Street Health in Arizona. She graduated from the Zhejiang University School of Medicine prior to working in clinical research focused on preventive medicine at the University of Illinois and the University of Nevada. Dr. Patel earned her MSc in Global Health from Georgetown University, during which she worked with the WHO in Sierra Leone and Save the Children in Washington, D.C. She went on to complete her Family Medicine residency in Chicago at Norwegian American Hospital before completing a fellowship in Leadership in Value-based Care in conjunction with the Northwestern University Kellogg School of Management, where she earned her MBA. Dr. Patel’s interests include health tech and teaching medical students and she currently serves as Clinical Associate Professor at the University of Arizona School of Medicine.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Jan 30, 2025
Following the Medical Content Editorial Policy
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Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1References
Hu J, Andablo-Reyes E, Mighell A, Pavitt S, Sarkar A. Dry mouth diagnosis and saliva substitutes-A review from a textural perspective. J Texture Stud. 2021 Apr;52(2):141-156. doi: 10.1111/jtxs.12575. Epub 2020 Dec 15. PMID: 33274753.
https://onlinelibrary.wiley.com/doi/10.1111/jtxs.12575Arany S, Kopycka-Kedzierawski DT, Caprio TV, Watson GE. Anticholinergic medication: Related dry mouth and effects on the salivary glands. Oral Surg Oral Med Oral Pathol Oral Radiol. 2021 Dec;132(6):662-670. doi: 10.1016/j.oooo.2021.08.015. Epub 2021 Aug 29. PMID: 34593340; PMCID: PMC9112430.
https://www.oooojournal.net/article/S2212-4403(21)00591-5/fulltextTaubert M, Davies EM, Back I. Dry mouth. BMJ. 2007 Mar 10;334(7592):534. doi: 10.1136/bmj.39036.433542.68. PMID: 17347241; PMCID: PMC1819535.
https://www.bmj.com/content/334/7592/534Kawamoto M, Yamada SI, Gibo T, Kajihara R, Nagashio S, Tanaka H, Yajima J, Takizawa A, Kondo E, Sakai H, Kaneko T, Uehara T, Kurita H. Relationship between dry mouth and hypertension. Clin Oral Investig. 2021 Sep;25(9):5217-5225. doi: 10.1007/s00784-021-03829-4. Epub 2021 Feb 16. PMID: 33594468.
https://link.springer.com/article/10.1007/s00784-021-03829-4Cappetta K, Beyer C, Johnson JA, Bloch MH. Meta-analysis: Risk of dry mouth with second generation antidepressants. Prog Neuropsychopharmacol Biol Psychiatry. 2018 Jun 8;84(Pt A):282-293. doi: 10.1016/j.pnpbp.2017.12.012. Epub 2017 Dec 20. PMID: 29274375.
https://www.sciencedirect.com/science/article/abs/pii/S0278584617306838?via%3Dihub