Read below about dry mouth, including causes and common questions. Or get a personalized analysis of your dry mouth from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

This symptom can also be referred to as:
Mouth dryness
Thirsty

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A.I. Health Assistant Causes for Dry Mouth

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced dry mouth. This list does not constitute medical advice.

  1. 1.Obstructive Sleep Apnea

    Sleep apnea is a disorder in which the upper airway is obstructed during sleep, which causes poor sleep quality and frequent awakening.

    Sleep apnea is a lifelong condition but symptoms can be well managed with treatment.

    Rarity:
    Common
    Top Symptoms:
    fatigue, irritability, daytime sleepiness, trouble sleeping, sore throat
    Symptoms that always occur with obstructive sleep apnea:
    snoring or apneas
    Urgency:
    Primary care doctor
  2. 2.Dehydration

    Dehydration occurs when the body does not have fluid to function properly, because of decreased intake or increased losses like vomiting and diarrhea. Symptoms of dehydration include extreme thirst, dark urine, fatigue, and dizziness.

    With rehydration, symptoms resolve completely.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, dizziness, vomiting or diarrhea, racing heart beat, being severely ill
    Urgency:
    Hospital emergency room
  3. 3.Diabetes Insipidus

    Diabetes insipidus (DI) is caused by a lack of, or decreased sensitivity to the hormone vasopressin. Vasopressin is needed for the kidneys to concentrate urine, making sure you do lose to much fluids. If this function is impaired, it will result in urinating frequently and large amounts, extreme thirst and dehydration.

    Can be temporary or permanent.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, irritability, constipation, excesive thirst, dry mouth
    Urgency:
    Primary care doctor

    Dry Mouth Checker

    Take a quiz to find out why you’re having dry mouth.

    Dry Mouth Quiz
  4. 4.Chronic Inflammation of the Salivary Gland (Parotitis)

    The parotid glands are large salivary glands that sit inside each cheek, over the jaw in front of each ear. Chronic recurrent parotitis is a condition that causes repeated cycles of swelling in these glands, causing swelling and occasionally dry mouth or a strange taste.

    Most episodes of chronic parotitis are treated symptomatically. Antibiotics are often effective. In the most severe cases, the inflamed gland can be surgically removed.

    Rarity:
    Ultra rare
    Top Symptoms:
    jaw pain, moderate fever, swollen jaw, dry mouth, swelling behind the ears
    Symptoms that always occur with chronic inflammation of the salivary gland (parotitis):
    swollen jaw
    Urgency:
    Primary care doctor
  5. 5.Burning Mouth Syndrome

    Burning mouth syndrome (BMS) is a chronic pain syndrome defined as having a burning pain or sensation in your mouth without a cause that can be found. It happens way more often in women (7 times more likely), typically during times of hormonal changes (just before or during menopause). While no one has identified the cause, it could have to do with the makeup of saliva, damage from dentures, tics or teeth grinding, infections, and even autoimmune diseases.

    23.8% have moderate improvement with treatment. 49% see no improvement. 18.9% get worse over time. 3% of people will have it go away on its own.

    Rarity:
    Common
    Top Symptoms:
    dry mouth, changed sense of taste, tongue pain, burning sensation in the mouth, moderate mouth pain
    Symptoms that always occur with burning mouth syndrome:
    burning sensation in the mouth, tongue pain
    Urgency:
    Primary care doctor
  6. 6.Hyperglycemic Hyperosmolar Syndrome (Hhs)

    Hyperosmolar hyperglycemic state is a very serious sudden complication of type 2 diabetes in which blood sugar is dangerously high.

    Within days with appropriate treatment.

    Rarity:
    Rare
    Top Symptoms:
    nausea or vomiting, being severely ill, severe fatigue, fruity odor on breath, frequent urination
    Symptoms that always occur with hyperglycemic hyperosmolar syndrome (hhs):
    being severely ill
    Urgency:
    Emergency medical service
  7. 7.Side - Effect(s) of Radiation Therapy to the Head and Neck

    Radiation therapy is a common treatment for cancer and more than half of cancer patients will undergo a form of this treatment. The radiation attacks cell DNA in order to prevent the cells from growing more and kills them.

    In many cases, symptoms resolve on their own at the end of treatment.

    Rarity:
    Rare
    Top Symptoms:
    sore throat, hoarse voice, dry mouth, mouth pain, changed sense of taste
    Symptoms that always occur with side-effect(s) of radiation therapy to the head and neck:
    current radiation therapy to the head or neck
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Dry Mouth

  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?
  • Q.Do you have trouble sleeping?
  • Q.Have you experienced any nausea?
  • Q.Do you have dry eyes?

If you've answered yes to one or more of these questions, try our dry mouth symptom checker to find out more.

Dry Mouth Quiz

Dry Mouth Symptom Checker Statistics

  • People who have experienced dry mouth have also experienced:

    • 6% Fatigue
    • 3% Headache
    • 3% Nausea
  • People who have experienced dry mouth were most often matched with:

    • 46% Dehydration
    • 30% Diabetes Insipidus
    • 23% Obstructive Sleep Apnea
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

Take a quiz to find out why you’re having dry mouth

Dry Mouth Quiz