Persistent cough for months: what should you know?

A cough lasting for months needs a clinical assessment to identify its cause, particularly if it is worsening or affects breathing, sleep, or daily life. The explanation may involve airway sensitivity, nasal drainage, reflux, asthma, medicines, or an ongoing lung problem.

Chronic cough describes a symptom that continues over an extended period, not a single diagnosis. Asthma can cause cough with or without obvious wheeze. Allergic rhinitis and postnasal drip may cause throat clearing, while acid reflux can cause cough, throat irritation, or hoarseness without classic heartburn. Smoke, vaping, workplace dust, and some medicines can also maintain airway irritation. A clinician may need to consider more than one contributor.

Book a GP Consultation and bring a clear timeline: when the cough began, whether it followed an infection, and how it has changed. Record dry or productive cough, blood, wheeze, breathlessness, chest pain, heartburn, nasal symptoms, sleep effects, smoking or vaping, workplace exposures, and current medicines. Avoid smoke and known irritants while waiting, and do not stop prescribed medicine without advice.

Get emergency help for severe breathing difficulty, blue or grey lips, confusion, fainting, or severe chest pain. Seek prompt medical advice for coughing blood, persistent fever, unexplained weight loss, drenching night sweats, repeated chest infections, or a clear deterioration. A long-standing cough also warrants earlier review when you have significant lung disease or a weakened immune system.

Ask which causes best fit your timeline, whether your chest and breathing need tests, and what treatment trial or follow-up is appropriate. Clarify what improvement should look like, when to return, and which symptoms require urgent help. Mention family history, occupational exposure, reflux, allergies, and every medicine or supplement.