Dry mouth in older adults

Overview

Dry mouth (also called xerostomia) is a condition where your mouth does not make enough saliva (spit). Saliva helps you chew, swallow, and speak, and it protects your teeth from decay. When you don't have enough saliva, your mouth can feel sticky, dry, or uncomfortable.

Yes, dry mouth is very common in older adults. Many people over 65 experience it at some point.

Dry mouth affects people of all ages, but it is especially common in older adults. It can also affect people who take certain medicines, have a chronic health condition like diabetes or Sjögren's syndrome, or who have been treated with radiation to the head or neck.

Symptoms

Common symptoms

• A sticky or dry feeling in the mouth
• Frequent thirst
• Difficulty chewing, swallowing, or speaking
• A dry or sore throat
• Cracked or chapped lips
• A bad taste in the mouth or bad breath

Symptoms in children

• Children may complain of a dry, sticky mouth
• Difficulty eating dry foods like crackers or cereal
• More frequent cavities or toothaches

Symptoms in older adults

• Difficulty wearing dentures (false teeth)
• Trouble swallowing pills
• A burning feeling on the tongue
• Changes in sense of taste

Causes

Main causes

• Medicines – many prescription and over-the-counter drugs can cause dry mouth, including those for blood pressure, depression, and allergies.
• Dehydration – not drinking enough water or losing fluids from vomiting, diarrhea, or fever.
• Medical treatments – radiation therapy to the head or neck can damage saliva glands.
• Certain health conditions – such as diabetes, Sjögren's syndrome, HIV/AIDS, and Parkinson's disease.
• Nerve damage – injury or surgery that affects the nerves of the head and neck.

Risk factors

• Being over 65 years old
• Taking multiple medicines (polypharmacy)
• Having a chronic illness like diabetes or autoimmune disease
• Smoking or using tobacco products
• Drinking alcohol or caffeine frequently

When to see a doctor

See a doctor urgently if:

• Difficulty breathing or swallowing that gets worse quickly
• Signs of a serious infection in your mouth or throat, like fever or swelling

Book a routine appointment if:

• Dry mouth that does not go away with self-care after a few weeks
• Frequent cavities, gum problems, or mouth infections
• Trouble eating or speaking because of dryness

Diagnosis

Your healthcare provider will ask about your symptoms, health history, and medicines. They will look inside your mouth, check your teeth and gums, and see how much saliva you produce.

Tests that may be done

• Oral examination by a doctor or dentist
• Saliva flow test (sialometry) to measure how much spit you make
• Blood tests to check for underlying conditions like diabetes or autoimmune disease

What to expect at your appointment

Diagnosis is usually simple and done in a clinic visit. Your provider may ask you to describe your symptoms and when they started. They might also ask about all the medicines you take. Sometimes they refer you to a dentist or a specialist.

Treatment

Treatment for dry mouth focuses on relieving symptoms, protecting your teeth, and addressing the underlying cause if possible. Many cases can be improved with simple self-care steps.

Self-care at home

• Sip water throughout the day, especially during meals.
• Chew sugar-free gum or suck on sugar-free hard candies to stimulate saliva.
• Avoid caffeine, alcohol, and tobacco – they can dry out your mouth.
• Use a humidifier in your bedroom at night.
• Brush your teeth twice a day with fluoride toothpaste and floss daily.

Medical treatments

If self-care isn't enough, your healthcare provider may recommend saliva substitutes (rinses, sprays, or gels) to keep your mouth moist. They can also adjust or change any medicines that might be causing dry mouth. In some cases, prescription medicines that help the body produce more saliva may be considered – your doctor will discuss the options with you.

When is surgery considered?

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

Living with this condition

Living with dry mouth means paying extra attention to oral hygiene and staying hydrated. Keep a water bottle nearby, use lip balm, and avoid foods that are very dry or spicy. Many people find that sugar-free gum or lozenges help throughout the day.

Lifestyle tips

• Drink plenty of water – aim for small sips frequently.
• Avoid mouthwashes that contain alcohol – they can make dryness worse.
• If you wear dentures, take them out at night and clean them well.
• See your dentist regularly for check-ups and cleaning.

Diet and exercise

A soft, moist diet can be easier to eat – try soups, stews, yoghurts, and smoothies. Avoid very salty, spicy, or acidic foods if they cause discomfort. Staying physically active helps overall health but be sure to drink extra fluids when exercising.

Mental health and emotional wellbeing

Dry mouth can be frustrating and may make you feel self-conscious when speaking or eating. If it causes anxiety or sadness, talk to your healthcare provider. Joining a support group or sharing tips with others who have the same problem can also help.

Prevention

You cannot always prevent dry mouth, but you can reduce your risk. Stay hydrated, limit caffeine and alcohol, avoid tobacco, and keep your mouth clean. If you take medicines that cause dry mouth, ask your doctor if there are alternatives.

Screening programmes

Regular dental check-ups can help catch problems caused by dry mouth early. There is no specific screening test for dry mouth.

Complications

If left untreated

• Increased risk of tooth decay (cavities) and gum disease
• Mouth infections like thrush (fungal infection)
• Difficulty eating and speaking
• Poorly fitting dentures

Long-term outlook

For most people, dry mouth can be managed well with simple self-care and medical support. Although it may not go away completely, you can keep your mouth comfortable and healthy by working with your healthcare team. It's a condition that usually does not get worse over time if you take care of it.

Find support

International organisations

• American Academy of Oral Medicine
• Sjögren's Foundation

Local organisations

• NHS · UK

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