Why does cough appear at night?
Cough may become more noticeable at night because lying down can allow nasal secretions to reach the throat and may worsen reflux. Asthma, respiratory infections, bronchitis, smoking, and exposure to irritants can also contribute. The time of day alone cannot identify the cause.
Cough is a protective reflex that helps clear mucus and particles from the airways. When it persists or repeatedly interrupts sleep, it should be assessed in the context of its duration, associated symptoms, known conditions, and current medication.
Common possibilities include:
- nasal secretions and upper-airway inflammation;
- asthma, including forms in which cough is the main symptom;
- respiratory infections and cough that continues after an infection;
- gastro-oesophageal reflux, particularly with heartburn or regurgitation;
- chronic bronchitis, COPD, smoking, and occupational irritants;
- some medicines, including certain treatments for high blood pressure.
The European Respiratory Society generally defines chronic cough in adults as cough lasting longer than eight weeks. Duration is only one guide: a more recent cough may need earlier assessment when warning signs are present.
When is it a warning sign?
Request medical assessment if cough persists, keeps returning, or affects sleep and daily activities. Tell the clinician about breathlessness, wheezing, repeated fever, chest pain, persistent hoarseness, unintentional weight loss, or blood in the sputum.
Severe breathlessness, intense chest pain, confusion, blue lips, or coughing up a significant amount of blood may indicate an emergency. Do not wait for a routine appointment in these situations; contact local emergency services.
How does pulmonology help?
A pulmonology consultation starts with the symptom history and clinical examination. The clinician considers when the cough began, whether it is dry or productive, possible triggers, wheezing, known conditions, and medication. Depending on the situation, the next steps may include spirometry, pulse oximetry, chest imaging, or other tests.
Spirometry can support the assessment of asthma, COPD, or airflow limitation, but its result must be interpreted together with symptoms and examination. Not every cough needs the same tests, and treatment should not be selected from online information alone.
What should you note before the appointment?
It helps to record:
- when the cough began and when it is most noticeable;
- whether it is dry or produces mucus;
- fever, breathlessness, wheezing, reflux, or nasal symptoms;
- medicines and inhalers currently used;
- smoking, workplace exposures, and previous test results.
This information does not replace assessment, but it helps the clinician choose appropriate investigations and avoid unnecessary repetition.
Where can you book in Arad?
Dr. Teaha Cristina provides pulmonology consultations in Arad and Chișineu Criș. Review the medical services, locations and opening hours, or use online booking.
Medical sources
- European Respiratory Society guideline on the diagnosis and treatment of chronic cough
- NHLBI/NIH: asthma information
Last editorial update: 15 July 2026.
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