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Why Is My Mouth (and Throat) Always Dry? Causes & Treatments Explained
Have you ever woken up with a dry mouth or a scratchy throat? It’s uncomfortable, and sometimes even sipping water doesn’t help much. This condition is known as xerostomia, or dry mouth. It can also make your throat feel dry, especially while sleeping. Here’s what causes it and what you can do about it.
Table of Contents
What Is Dry Mouth (Xerostomia)?
A dry mouth, also called xerostomia, happens when your salivary glands don’t produce enough saliva to keep your mouth and throat moist. It’s usually caused by dehydration, medications, mouth breathing, or certain health conditions.
Common Causes of Dry Mouth and Throat
There are many reasons why your mouth or throat might feel dry. Some are temporary, while others may need medical attention.
1. Dehydration
Not drinking enough water is one of the most common causes of dryness. Hot weather, exercise, or caffeine can also make you lose fluids faster than you replace them.
2. Sleeping with Your Mouth Open
If you wake up with a dry mouth, it’s likely because you sleep with your mouth open. This is especially common if you snore or have nasal congestion.
3. Medications
Hundreds of medicines list dry mouth as a side effect — including antihistamines, antidepressants, blood pressure tablets, and painkillers.
4. Medical Conditions
Certain health issues can reduce saliva production, such as:
- Diabetes
- Sjögren’s syndrome
- Parkinson’s disease
- Autoimmune disorders
5. Anxiety or Stress
When you’re anxious, your body produces less saliva, which can lead to temporary dry mouth and throat.
6. Smoking and Alcohol
Both can irritate your mouth and throat and dry out the soft tissues. Alcohol-based mouthwashes can also make dryness worse.
Dry Mouth While Sleeping
Many people notice dryness only at night or when they wake up. This usually happens because:
- You breathe through your mouth instead of your nose.
- The air is too dry, especially in air-conditioned rooms.
- Certain medications taken before bed reduce saliva flow.
Tips to reduce dryness at night:
- Use a humidifier in your bedroom.
- Keep a glass of water by your bed.
- Avoid alcohol or caffeine before sleeping.
- Try sleeping on your side instead of your back.
Treatments and Relief for Dry Mouth and Throat
If you’re wondering how to treat dry mouth or throat, try these simple remedies and treatments.
At-Home Remedies
- Stay hydrated: Sip water throughout the day.
- Chew sugar-free gum or lozenges: This helps stimulate saliva flow.
- Avoid smoking and alcohol: These worsen dryness.
- Use alcohol-free mouthwash: Choose one that contains xylitol or fluoride.
- Keep the air moist: A humidifier helps, especially at night.
Medical Treatments
If your dry mouth doesn’t improve, your dentist or doctor may:
- Prescribe saliva substitutes or oral gels.
- Adjust your medications if they’re the cause.
- Recommend fluoride treatments to protect your teeth.
When to See a Doctor
You should seek medical advice if:
Dryness persists for more than a few weeks.
You have difficulty swallowing or speaking.
Your mouth feels sore or you develop cavities more easily.
Persistent dryness might be linked to an underlying condition like Sjögren’s syndrome or diabetes, so it’s best not to ignore it.
Key Takeaway
Dry mouth and throat are usually harmless, but when they happen often, they can affect your comfort, breath, and oral health. Stay hydrated, avoid irritants, and keep your mouth moist — and if it doesn’t improve, a dentist can help identify what’s really causing it.
Book dental check-up with Dr Clear Aligners and let our dentists assess your oral health, find out what’s causing your dry mouth, and recommend the right treatment to keep your smile healthy and comfortable.
