When to seek care for dry mouth

Overview

Dry mouth (also called xerostomia) is when your mouth doesn't make enough saliva (spit). Saliva helps you chew, swallow, and talk, and it fights germs. When you don't have enough, your mouth can feel dry, sticky, or uncomfortable.

Yes, dry mouth is very common. Many people experience it at some point, especially as they get older or take certain medicines.

Dry mouth can affect anyone, but it's more common in older adults, people who take multiple medicines, and those with certain health conditions like diabetes or Sjögren's syndrome.

Symptoms

Common symptoms

• A sticky, dry feeling in your mouth
• Difficulty chewing, swallowing, or tasting
• A dry or sore throat
• Cracked lips or corners of the mouth
• Bad breath
• A tongue that feels rough or sticky

Symptoms in children

• Complaining of a dry mouth or thirst
• Difficulty eating dry foods like crackers
• Less often than adults, but can happen with dehydration or certain medicines

Symptoms in older adults

• Dry mouth is more common due to medicines and aging
• Difficulty wearing dentures or speaking
• Increased risk of cavities and mouth infections

Causes

Main causes

• Dehydration (not drinking enough fluids)
• Side effects from many medicines, including those for allergies, depression, and high blood pressure
• Medical conditions such as diabetes, Sjögren's syndrome, or HIV
• Cancer treatments like radiation to the head or neck
• Mouth breathing, especially during sleep

Risk factors

• Taking multiple medicines (polypharmacy)
• Older age
• Smoking or chewing tobacco
• Drinking alcohol or caffeine in excess
• Having an autoimmune disease or diabetes

When to see a doctor

See a doctor urgently if:

• If dry mouth comes with breathing or swallowing problems, call your local emergency number right away.
• If dry mouth is new and you have a high fever or severe dehydration, seek same-day care.

Book a routine appointment if:

• If dry mouth lasts for weeks and affects your eating or talking
• If you have frequent cavities or mouth infections
• If you're worried about a medicine causing your dry mouth

Diagnosis

Your healthcare provider will ask about your symptoms and medicines, and look inside your mouth. They may test your saliva flow or check for underlying conditions.

Tests that may be done

• Review of your medicines and health history
• A physical exam of your mouth and throat
• Saliva tests to measure how much spit you make
• Blood tests to check for conditions like diabetes or Sjögren's syndrome

What to expect at your appointment

The visit is simple and painless. Your provider will ask questions and may do a quick exam. They'll work with you to find the cause and offer ways to relieve your dry mouth.

Treatment

Treatment for dry mouth focuses on relieving symptoms and treating any underlying cause. Most people can manage dry mouth at home, but sometimes medicines or other treatments are needed.

Self-care at home

• Sip water frequently throughout the day
• Chew sugar-free gum or suck on sugar-free hard candies to stimulate saliva
• Use a humidifier at night to keep the air moist
• Avoid caffeine, alcohol, and tobacco—they can make dryness worse
• Breathe through your nose, not your mouth

Medical treatments

Your doctor might suggest saliva substitutes (sprays, gels, or lozenges) or prescription medicines that help your mouth make more saliva. Adjusting your current medicines may also help. Never change or stop a medicine without talking to your doctor.

When is surgery considered?

Surgery is rarely needed for dry mouth. It might be considered if there is a blockage in a saliva gland or if a tumour is causing the problem.

Living with this condition

Living with dry mouth means being mindful of your mouth care. Drink water often, avoid dry or sugary foods, and keep a water bottle nearby. Good oral hygiene is very important to prevent cavities.

Lifestyle tips

• Drink plenty of water throughout the day
• Limit sugary snacks and drinks
• Use alcohol-free mouthwash
• Chew sugar-free gum after meals

Diet and exercise

Eat moist foods like soups, stews, and yoghurts. Avoid dry, hard, or spicy foods that can irritate your mouth. Regular exercise is fine, but stay well hydrated.

Mental health and emotional wellbeing

Dry mouth can be frustrating and may affect your confidence, especially if it changes how you speak or taste food. It's normal to feel annoyed or worried. Talk to your doctor or a counsellor if it affects your quality of life.

Prevention

You can reduce your risk by staying hydrated, avoiding too much caffeine and alcohol, and not smoking. If a medicine causes dry mouth, your doctor might adjust the dose or switch to another one.

Complications

If left untreated

• Higher risk of tooth decay (cavities)
• Gum disease (gingivitis)
• Mouth infections like thrush (a fungal infection)
• Difficulty eating and poor nutrition

Long-term outlook

For most people, dry mouth is a manageable condition. With proper care and the right treatment, you can keep your mouth comfortable and healthy. If an underlying condition is found, treating it often helps the dry mouth improve.

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