What should you know about persistent dry cough at night?

Lying down can allow stomach contents to move upward and can make nasal drainage irritate the throat. Bedroom dust, dry air, or asthma-related airway narrowing may also trigger coughing during sleep. A recent common cold or acute bronchitis can leave an irritated cough, while allergic rhinitis, bronchiectasis, or chronic cough can cause a longer pattern. The timing is a clue, not a diagnosis.

Keep smoke, incense, perfumes, and dust away from the sleeping area. Sip water when the throat feels dry and consider whether late meals or lying down soon after eating worsen symptoms. Follow any prescribed inhaler plan exactly. Note bedtime, waking episodes, meals, nasal blockage, wheeze, and room triggers so a clinician can see the pattern.

Arrange an appointment when night coughing continues, repeatedly wakes you, or affects daytime concentration and activity. Get urgent help for severe breathlessness, chest pain, blue or grey lips, coughing blood, fainting, or rapidly worsening symptoms. Assessment may include listening to the chest and checking for reflux, nasal disease, or airway narrowing.

Ask whether the timing suggests reflux, allergy, asthma, or another airway problem, and whether your current medicines or inhaler technique need review. Describe how many times sleep is interrupted and whether symptoms improve when upright.