Dry mouth, also known as xerostomia, is a condition characterized by a lack of sufficient saliva in the oral cavity. This common symptom can significantly impact a person’s quality of life and oral health if left untreated.

Causes

Dry mouth can result from various factors:

• Medications: Many prescription and over-the-counter drugs can cause dry mouth as a side effect.
• Dehydration: Not drinking enough water or excessive sweating can lead to dry mouth.
• Medical conditions: Sjögren’s syndrome, diabetes, HIV/AIDS, and other diseases may cause xerostomia.
• Cancer treatments: Radiotherapy and chemotherapy can affect salivary gland function.
• Anxiety and stress: These psychological factors can contribute to dry mouth.
• Mouth breathing: Sleeping with an open mouth or having a blocked nose can cause dryness.

Symptoms

People with dry mouth may experience:

• A persistent feeling of oral dryness
• Difficulty speaking, chewing, or swallowing, especially dry foods
• Burning sensation in the mouth
• Cracked lips and corners of the mouth
• Bad breath (halitosis)
• Increased thirst, especially at night
• Changes in taste or a metallic taste
• Increased risk of dental cavities and gum disease

Diagnosis

Diagnosis of dry mouth typically involves:

• A thorough medical history and review of medications
• Physical examination of the oral cavity
• Measurement of salivary flow (sialometry)
• Possible additional tests to identify underlying conditions

Management

Treatment for dry mouth focuses on symptom relief and addressing underlying causes:

• Lifestyle modifications:
  • Sipping water frequently
  • Avoiding caffeine, alcohol, and tobacco
  • Using a humidifier at night
• Oral hygiene:
  • Regular dental check-ups
  • Using fluoride toothpaste and mouthwash
• Saliva substitutes:
  • Artificial saliva products (sprays, gels, or lozenges)
• Medications:
  • Saliva stimulants like pilocarpine or cevimeline for severe cases
  • Adjusting medications that may be causing dry mouth
• Treating underlying conditions:
  • Managing diseases like Sjögren’s syndrome or diabetes