Dry Mouth (Xerostomia)
Dry mouth is a lack of enough saliva, leaving the mouth parched. Besides discomfort, it raises the risk of tooth decay and gum problems.
Causes & risk factors
- Certain medicines
- Dehydration
- Mouth breathing or snoring
- Diabetes
- Ageing
- Some medical conditions affecting saliva glands
Common symptoms
- A dry, sticky feeling in the mouth
- Frequent thirst
- Difficulty chewing or swallowing
- Cracked lips or a sore tongue
- Bad breath
- More tooth decay than usual
Tests & diagnosis
Treatment & management
- Sipping water often
- Sugar-free gum or lozenges to boost saliva
- Saliva substitutes if needed
- Avoiding caffeine, alcohol and tobacco
- Reviewing medicines with a doctor
- Extra attention to brushing and dental check-ups
When to see a doctor urgently
- Persistent dry mouth affecting eating or speaking
- Dry mouth with dry eyes or joint pains
- Frequent tooth decay or mouth infections
- Dry mouth with high thirst and passing lots of urine
Not a diagnosis. MedDroid gives general educational information about dry mouth (xerostomia). It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
Why does dry mouth cause more cavities?
Saliva washes away food and neutralises acid. With less saliva, acids and bacteria linger longer, so teeth decay more easily.
Can medicines cause dry mouth?
Yes, many common medicines reduce saliva. If you notice dry mouth after starting a new medicine, mention it to your doctor.
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MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.