Cough and shortness of breath at night

Asthma may cause nighttime cough, wheeze, chest tightness, or breathlessness when airways narrow. Acute bronchitis can irritate the airways after an infection. COPD and bronchiectasis may cause ongoing cough, mucus, and reduced exercise tolerance. Breathlessness when lying flat, waking suddenly gasping, or ankle swelling can point to a heart-related problem and needs medical attention. Anaemia can also contribute to breathlessness, particularly with activity.

The timing matters: record whether symptoms follow lying down, exercise, allergens, cold air, or a recent illness. A clinician may listen to your chest and decide whether breathing tests, heart assessment, or other checks are appropriate.

Sit upright, loosen tight clothing, and move away from smoke or a suspected trigger. Use a prescribed reliever inhaler only according to your action plan or clinician's directions; do not borrow someone else's medicine. Keep a note of onset, duration, wheeze, mucus, chest discomfort, and whether lying down changes the symptoms.

Call emergency services for severe or rapidly worsening breathlessness, inability to speak comfortably, blue or grey lips, new confusion, fainting, severe chest pressure, or coughing blood. Sudden breathlessness with facial or throat swelling may be anaphylaxis and is an emergency. Even milder repeated nighttime symptoms need prompt clinical review because disturbed breathing can reflect a condition requiring treatment.

Ask whether asthma, bronchitis, COPD, bronchiectasis, anaemia, or a heart condition could explain the pattern. Discuss inhaler technique, warning signs in your action plan, and whether symptoms are linked to position, exercise, infection, or allergens.