Dry mouth and sore throat: what should you know?

Dry mouth and a sore throat often arise from mouth breathing, infection, irritation, reflux, medicines or reduced saliva. Dry tissues can feel scratchy and make swallowing uncomfortable, but the pair does not point to one diagnosis. Look for fever, cough, swollen glands, blocked nose, heartburn or a recent medicine change.

A common cold, influenza or COVID-19 can cause throat pain with cough, tiredness or fever. Allergic rhinitis may lead to post-nasal drainage and mouth breathing. Strep throat and tonsillitis can cause marked pain when swallowing, swollen neck glands or visible throat changes. Acid reflux may cause a dry, irritated throat, hoarseness or a sour taste, often worse after meals or when lying down. Glandular fever can bring prolonged tiredness and swollen glands.

Take frequent sips of water and choose cool or warm drinks according to what feels soothing. Sugar-free gum may encourage saliva; avoid tobacco, alcohol and very spicy foods while the throat is irritated. A humidified room can help if the air is dry. Rest your voice and follow label directions for any suitable pain relief. A clinician can inspect the throat and decide whether testing is needed, especially when fever or marked swallowing pain is present.

Get urgent help for difficulty breathing, drooling, inability to swallow liquids, severe one-sided throat swelling, muffled speech or rapidly increasing neck swelling. Arrange assessment for persistent fever, dehydration, a rash, severe pain, or symptoms that are not improving. Seek advice sooner if you have reduced immunity or a condition that makes swallowing unsafe.

Could this be an infection, reflux, allergy or medicine effect? Should my throat be tested? What drinks, mouth products or pain relief are suitable for me? How can I protect my teeth while saliva is reduced?