Fatigue with a persistent cough: what should you know?

Coughing can fragment sleep and leave you tired even when the original trigger is settling. Allergic Rhinitis or Postnasal Drip may irritate the throat; Acid Reflux can trigger cough, throat clearing or hoarseness, often after meals or when lying down. Asthma may cause cough, chest tightness or wheeze. A recent infection can leave a cough and low energy for a while. Persistent cough can also be affected by smoking, vaping, environmental irritants or medicines. The nature of the cough, timing, breathlessness and associated symptoms help guide assessment.

Record how long the cough has lasted, whether it is dry or productive, and what triggers it. Avoid smoke and strong scents, drink fluids, and consider raising the head of the bed if symptoms are worse at night. Do not start antibiotics or someone else’s inhaler without advice. A GP Consultation can include a chest examination, medication review and tests or imaging when indicated.

Seek urgent help for severe breathing difficulty, blue or grey lips, chest pain, coughing blood, confusion or fainting. Arrange prompt assessment for unexplained weight loss, fever that persists, night sweats, worsening breathlessness, a new wheeze, or a cough that continues despite recovery from an infection.

Could reflux, allergy, asthma, infection or a medicine be contributing? Do I need lung-function testing or a chest image? Which changes should prompt urgent review?