Evie Summers
Drooling in your sleep is a common occurrence and is usually harmless. However, repeated drooling can cause bad breath, dehydration, and feelings of embarrassment. While the most common cause of drooling during sleep is the overproduction of saliva, it can also be a symptom of an underlying health condition. For example, excessive drooling can be a warning sign of neurological issues, digestive problems, dental issues, or even sleep apnea. If you are concerned about drooling in your sleep, consider changing your sleep position, treating allergies, or consulting a healthcare professional.
Characteristics and contributing factors of dribbling in your sleep
| Characteristics | Values |
|---|---|
| Normal occurrence | Yes |
| Excessive dribbling indicator | Potential health issues |
| Occurrence in all ages | Yes |
| Occurrence in all ages warning sign | Especially in the elderly |
| Contributing factors | Sleep position, nasal congestion, GERD, neurological conditions, teeth grinding, sleep apnea, dental problems, digestive problems, endocrine disorders, medication, eating habits, psychological problems, stress, tension, fatigue, weakness, swallowing reflex, facial muscles, mouth breathing, sinus passages, pregnancy, allergies |
| Preventative measures | Sleeping on back, breathing through nose, keeping mouth closed, mouth tape, treating allergies, treating congestion, CPAP machine, Botox in saliva glands, removing saliva glands |
| Possible consequences | Bad breath, dehydration, embarrassment |
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What You'll Learn
It's normal, but can signal a problem
Drooling in your sleep is caused by relaxed swallowing reflexes and saliva dribbling out of your mouth. This can happen when you sleep on your side or stomach, as gravity pulls the saliva towards your pillow. In addition, people who sleep with their mouths open, snore, or have narrow sinus passages are more likely to drool.
While drooling in your sleep is normal, excessive and frequent drooling can signal an underlying problem. This could be a sleep-related issue, such as sleep apnea, or a health condition, including:
- Gastroesophageal reflux disease (GERD)
- Neurological conditions
- Teeth grinding
- Allergies
- Cancer
- Stroke
- Cerebral palsy
- Multiple sclerosis (MS)
If you are concerned about drooling in your sleep, consider changing your sleep position or treating any underlying conditions or congestion. You can also try using mouth tape to keep your mouth closed while you sleep. If the issue persists, consult a healthcare professional.
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Sleeping position matters
Drooling during sleep is a common occurrence and is usually harmless. However, it can lead to embarrassment and unhygienic feelings, especially when it happens frequently. One of the main factors influencing drooling is your sleeping position.
When you sleep on your back, gravity causes excess saliva to stay in your mouth or travel down your throat. This is because, in this position, the swallowing reflex is activated, and saliva is directed towards the oesophagus and stomach. Sleeping on your back can, therefore, help to minimise drooling.
On the other hand, when you sleep on your side or front, gravity causes saliva to flow out of your mouth and onto your pillow. This is because your mouth is likely to hang open in these positions, allowing saliva to drip out. Additionally, if you breathe through your mouth, which is more common when sleeping on your side or front, saliva is more likely to escape.
If you are a side or stomach sleeper, you may be able to reduce drooling by trying to sleep on your back. You can use wedge pillows to prevent yourself from rolling over, and there are also pillows and mattresses designed to support back sleeping. You can also try to keep your mouth closed at night by breathing through your nose. This can be encouraged by using mouth tape.
However, it is important to note that drooling can sometimes be a symptom of an underlying health condition. If you are concerned about your drooling, you should consult a healthcare professional.
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All about saliva production
Saliva, also known as spit or drool, is a fluid produced and secreted by salivary glands in the mouth. Saliva is essential for keeping the mouth and throat lubricated, which is required for good health. It also plays a vital role in digestion, as it contains the enzyme amylase (or ptyalin), which breaks down starch into simpler sugars. Salivary glands also secrete salivary lipase, which is crucial for fat digestion, especially in newborn infants. Saliva has antimicrobial properties and helps to protect the teeth from bacterial decay. It also aids in swallowing and has a role in the sense of taste, as it carries chemicals to taste receptor cells.
The production of saliva is stimulated by both the sympathetic and parasympathetic nervous systems. Increased calcium causes vesicles within the cells to fuse with the apical cell membrane, leading to secretion. Additionally, Substance P can bind to Tachykinin NK-1 receptors, resulting in increased intracellular calcium concentrations and, consequently, increased saliva secretion. Both parasympathetic and sympathetic nervous stimulation can cause myoepithelium contraction, leading to the expulsion of secretions from the secretory acinus into the ducts and eventually into the oral cavity.
While saliva production is typically well-regulated, certain factors can lead to excess saliva production (sialorrhea or hypersalivation) or decreased saliva production (xerostomia or dry mouth). For instance, sleeping on your side or stomach can cause saliva to pool in your mouth and then escape due to gravity. Additionally, nasal congestion, GERD, neurological conditions, teeth grinding, and sleep disorders like sleep apnea can lead to increased drooling. On the other hand, certain medications, autoimmune disorders, and cancer treatments can reduce saliva production and cause dry mouth.
In summary, saliva is an essential fluid produced by salivary glands, serving multiple functions, including lubrication, digestion, and protection. Its production is intricately regulated by various physiological mechanisms, and disturbances in this regulation can lead to either excessive or insufficient saliva production, both of which can have implications for health and quality of life.
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Potential health issues
While drooling during sleep is normal and common, it can sometimes indicate an underlying health issue. Here are some potential health issues associated with drooling in your sleep:
Sleep apnea
Obstructive sleep apnea (OSA) is a sleep-related breathing disorder. It occurs when an individual temporarily stops breathing while asleep, and it can be very serious. People with OSA often start mouth breathing, which can lead to increased drooling. If you suspect you may have sleep apnea, it is important to seek a proper diagnosis and treatment.
Gastroesophageal reflux disease (GERD)
GERD is a digestive condition in which stomach acid flows back up into the oesophagus, causing irritation and potentially damaging the lining. People with GERD often experience difficulty swallowing, a feeling of a lump in the throat, and excessive drooling. The condition can be managed with certain lifestyle changes, such as avoiding spicy foods and eating smaller meals at night.
Neurological and psychological problems
Neurological diseases and psychological issues can impact the nervous system and stimulate the salivary glands, leading to increased drooling during sleep. Conditions such as autonomic neuropathy, neurological disorders, stress, sleep disorders, tension, fatigue, and weakness can contribute to drooling.
Dental problems
Dental issues, such as tooth decay, mouth ulcers, and teeth grinding (bruxism), can also lead to increased drooling during sleep. Teeth grinding is often associated with stress and anxiety, and it triggers extra saliva production to protect the mouth from damage.
Allergies and sinus issues
Nasal congestion due to allergies, colds, infections, or sinus problems can cause mouth breathing during sleep, leading to drooling. Inflamed or blocked sinus passages can obstruct airflow, making it difficult to breathe through the nose. Allergens such as dust, pollen, or animal dander can contribute to nasal congestion.
Other health conditions
In some cases, excessive drooling can be a symptom of more serious health conditions, such as multiple sclerosis (MS), Parkinson's, muscular dystrophy, or certain types of cancer. If you experience persistent and excessive drooling, it is important to consult a healthcare professional for guidance and advice.
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Ways to prevent dribbling
While occasional drooling is normal, excessive drooling may indicate an underlying issue. If you are experiencing excessive drooling, consult a healthcare professional. Here are some ways to prevent dribbling while you sleep:
Sleep on your back
Sleeping on your back can help to minimise drooling. When a sleeper lies on their back, gravity generally causes any excess saliva to stay in their mouth or travel to their throat. You can use wedge pillows to prevent rolling over onto your side or stomach.
Treat allergies and congestion
If you have allergies or nasal congestion, try using a decongestant to relieve the blockage. Nasal strips can also help to widen the nostrils and encourage airflow through the nose. Humidifiers can also help to increase moisture in the air, thinning mucus and soothing irritated airways.
Mouth taping
If you are unable to breathe through your nose, you can try mouth taping to keep your mouth closed while you sleep.
Stay hydrated
Drinking the recommended 1.2 litres of water a day can help prevent drooling and reduce dehydration.
Seek treatment for sleep apnea
If you suspect that your drooling might be caused by sleep apnea, speak to your doctor about treatments such as a continuous positive airway pressure (CPAP) machine or surgery.
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Frequently asked questions
Drooling in your sleep is usually caused by a combination of your facial muscles relaxing and saliva dribbling out of your mouth as you lie on your side or stomach. However, drooling in your sleep may also be caused by an underlying condition, such as sleep apnea, nasal congestion, GERD, neurological conditions, teeth grinding, or allergies.
Drooling in your sleep is normal and has happened to most people at some point. However, excessive and frequent drooling may signal an underlying medical or sleep-related condition.
To reduce dribbling in your sleep, you can try changing your sleep position. Sleeping on your back may help minimise drooling. You can also try breathing through your nose and keeping your mouth closed as you sleep, for example, by using mouth tape.
