Why do I drool with Parkinson’s?
This article is written by mr.hotsia, a curious traveler who has spent years exploring Thailand, Laos, Vietnam, Cambodia, Myanmar, India and many other Asian countries.
In small clinics and family homes, I often hear the same embarrassed confession from people with Parkinson’s:
“Saliva comes out of my mouth without me noticing.”
“My pillow is wet in the morning.”
“Sometimes I drool in public. I feel ashamed.”
Drooling has a medical name: sialorrhea.
It is very common in Parkinson’s, but it is rarely talked about openly. Many people think it means “too much saliva”. In reality, the story is more complicated.
Let us look gently at what is really happening.
Is Parkinson’s making too much saliva?
Most people are surprised by this:
For many people with Parkinson’s, the salivary glands are not overactive.
The problem is usually not that the body produces too much saliva, but that:
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Saliva is not swallowed often enough
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Saliva collects in the mouth
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Saliva then spills out over the lip
So the main issue is reduced swallowing and poor saliva control, not an “overproduction disease” of the salivary glands.
How does normal saliva and swallowing work?
In a healthy person:
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Saliva is constantly produced in small amounts
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The brain automatically triggers small, frequent swallows
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You swallow your saliva many times each minute without thinking
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Lips stay gently closed, and saliva stays inside
You do not notice this system at all. It is like a quiet maintenance program that runs in the background.
In Parkinson’s, this background program starts to fail.
What changes in Parkinson’s that cause drooling?
Several factors usually work together.
1. Reduced automatic swallowing
Parkinson’s affects automatic movements. That includes:
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Blinking less often
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Swallowing less often
When automatic swallowing slows down:
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Saliva stays in the mouth longer
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It pools around the tongue and lower lip
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Eventually it may overflow and escape
This is often the main driver of drooling.
2. Slower and weaker swallowing muscles
Parkinson’s can make muscles:
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Slower (bradykinesia)
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Stiffer (rigidity)
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Less coordinated
This includes the muscles of the:
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Tongue
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Throat
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Lips
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Jaw
If the tongue is slow and the throat muscles are weak or poorly timed, saliva is not cleared efficiently. It simply stays and builds up.
3. Open mouth posture and head position
Many people with Parkinson’s develop:
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Slightly open mouth at rest
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Head and neck that lean forward
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Reduced control of the lower lip
This position makes it easier for saliva to:
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Move toward the front of the mouth
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Slip over the lower lip
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Drip out when you are distracted, relaxed or sleeping
4. Reduced sensation and awareness
Some people with Parkinson’s:
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Do not fully feel how much saliva is in the mouth
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Are slow to notice that drooling has started
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React late with swallowing or wiping
Because of this reduced awareness, saliva may escape before the person realizes what is happening.
5. Swallowing difficulties with food and drink
If you already have trouble swallowing food or liquids, your swallowing of saliva is often affected too.
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You may be afraid to swallow because you fear choking
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You may unconsciously avoid big, strong swallows
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Saliva control then becomes worse
So drooling can be part of a larger swallowing problem that needs attention.
When does drooling usually happen?
From what I see in clinics and homes, drooling tends to be worst when:
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You are relaxed and not talking, such as:
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Watching TV
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Riding in a car
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Sitting quietly
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You are concentrating on something else:
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Reading
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Using a phone
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Doing a puzzle
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You are tired or drowsy
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You are asleep, especially lying on your side or stomach
It is usually less of a problem when you are:
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Eating
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Drinking
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Talking actively
In those moments, you swallow more often, so saliva is cleared.
Why does drooling feel so embarrassing?
In many cultures, saliva on the chin carries strong emotional meaning:
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People may think of drooling as childish or linked to severe disability
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Adults feel ashamed if they cannot control something so basic
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Families sometimes misunderstand and think the person has “given up”
Drooling can lead to:
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Skin irritation around the mouth
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Wet clothes and pillows
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Bad smell if saliva mixes with leftover food
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Social withdrawal because of fear of judgment
Yet drooling is not a sign of laziness or bad manners. It is a movement and coordination problem caused by Parkinson’s.
Knowing this can reduce some of the shame.
Is drooling dangerous or just unpleasant?
Drooling is mostly a quality of life problem, but it can have medical consequences too.
Possible issues:
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Skin problems
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Constant wetness can cause redness, rash or infection around the mouth and chin
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Infections and hygiene
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Excess saliva, if not cleaned, may smell bad and attract bacteria
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Oral hygiene can become more difficult
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Risk of aspiration
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If saliva is not swallowed properly, some of it can go toward the lungs instead of the stomach
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This can contribute to aspiration pneumonia in some people, especially if swallowing food is also difficult
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Because of this, drooling should be taken seriously and discussed openly with your medical team.
Do medications for Parkinson’s cause more drooling?
Usually, Parkinson’s medications do not cause drooling directly. In fact, by improving movement and swallowing, they may sometimes reduce drooling.
However:
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Some medicines can cause dry mouth instead
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Others that increase sleepiness can make someone less alert, which might indirectly affect saliva control
Drooling is mostly due to Parkinson’s itself, not a side effect of levodopa or typical Parkinson’s drugs. Still, your doctor can review all medications to see if anything is making things worse.
Can anything help reduce drooling?
The full treatment plan should always be made with your doctor or a specialist. In general, people may use a mix of:
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Swallowing and lip exercises
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Taught by a speech and swallowing therapist
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To strengthen lips, tongue and throat
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To train more frequent swallowing
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Posture and head position
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Sitting more upright
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Bringing the head back over the shoulders
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Closing the lips consciously when possible
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Behavioral strategies
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Setting reminders to swallow
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Having a tissue or small towel handy
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Chewing sugar free gum or sucking sugar free candy if safe, which may increase swallowing frequency
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Medical treatments
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In some cases, doctors may consider medicines or procedures that reduce saliva production
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These options have benefits and side effects, so they must be chosen carefully
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The important thing is:
You do not have to suffer in silence. Drooling is a known Parkinson’s symptom and doctors are used to discussing it.
What can I do right now at home?
While waiting to talk with your doctor or therapist, a few gentle habits may help:
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Sit upright, avoid slumping far forward
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Close your lips when you remember, and swallow slowly and firmly
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Keep tissues or a small cloth available without shame
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Pay attention to times of day when drooling is worst, and note them to tell your doctor
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Maintain good mouth care – brush teeth, clean tongue and gums regularly
These steps will not remove drooling completely, but they may make it more manageable.
Final thoughts from the road
One afternoon in a small house in northern Thailand, I sat with a man who quietly wiped his chin every few minutes. He apologized again and again:
“I am sorry. I do not want to drool. I feel like a baby.”
Later, his doctor and speech therapist explained to him and his family:
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Drooling is part of Parkinson’s for many people
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It comes from reduced swallowing and control, not from weakness of character
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There are strategies and treatments that may help
After that, he told me:
“I still drool sometimes,
but at least now I know why.
I feel less ashamed and more like a person with a medical problem,
not a child who misbehaves.”
That is the heart of this question:
“Why do I drool?”
Because Parkinson’s changes automatic swallowing, facial posture and muscle control, not because you are careless or dirty. Understanding this is the first step toward managing it with more kindness and less shame.
Frequently Asked Questions: Drooling and Parkinson’s
1. Why did I start drooling when my Parkinson’s got worse?
As Parkinson’s progresses, automatic swallowing slows down and muscles of the mouth and throat become less coordinated. Saliva builds up and may spill out of the mouth more easily.
2. Am I making too much saliva?
In most cases, no. Saliva production is fairly normal. The main problem is that you do not swallow it as often or as effectively as before.
3. Why do I drool more when I am relaxed or watching TV?
When you are relaxed and not talking or eating, you swallow less often. If your mouth is slightly open and your head leans forward, saliva can easily pool and escape.
4. Is drooling a sign that my Parkinson’s is very advanced?
Drooling is more common in later stages, but it can appear at different times in different people. It is a sign that swallowing and facial control are affected, not necessarily that everything is severe.
5. Can drooling cause serious health problems?
Drooling itself is not directly deadly, but it can contribute to skin irritation, infections, poor hygiene and aspiration of saliva, which may increase the risk of pneumonia in some people.
6. What kind of doctor should I talk to about drooling?
You can start with your neurologist or primary doctor. They may then refer you to a speech and swallowing therapist, and sometimes to an ear nose and throat specialist if needed.
7. Are there exercises that help with drooling?
Yes. A speech and swallowing therapist can teach lip, tongue and swallowing exercises, and strategies to increase swallowing frequency and improve saliva control.
8. Do I need special food or drink to reduce drooling?
Sometimes texture changes are needed if swallowing is unsafe, but these decisions should be guided by professionals after an assessment. Do not change everything on your own without advice.
9. Are there medications or treatments that reduce saliva?
There are options, such as certain tablets, drops or injections that can reduce saliva production, but they have possible side effects like dry mouth or thick mucus. They should only be used under medical supervision.
10. What is the most important first step if I drool a lot?
The most important first step is to tell your doctor honestly. Drooling is common in Parkinson’s and nothing to be ashamed of. Once you speak up, your team can start looking for safe, practical ways to make it easier to live with.
I’m Mr.Hotsia, sharing 30 years of travel experiences with readers worldwide. This review is based on my personal journey and what I’ve learned along the way. Learn more |