What should you know about cause of shortness of breath while sleeping?

Asthma can cause nighttime cough, chest tightness, or wheeze. COPD, Bronchiectasis, or Acute Bronchitis may cause breathlessness with cough and mucus. Breathlessness when lying down or waking suddenly can occur with a heart problem, while Anaemia may cause tiredness and breathlessness during activity. Atrial Fibrillation can produce an irregular heartbeat with reduced exercise tolerance. Anaphylaxis may include sudden breathing difficulty with swelling, hives, or throat tightness.

Sit upright, loosen tight clothing, and use a prescribed reliever inhaler exactly as directed. Record when symptoms begin, your position, cough, wheeze, chest discomfort, palpitations, fever, and possible triggers. Do not borrow inhalers or delay assessment because symptoms settle after sitting up. Arrange a clinical review for recurring episodes, new nighttime symptoms, or a change in an existing lung or heart condition.

Call emergency services for severe or rapidly worsening breathlessness, blue or grey lips, inability to speak normally, fainting, confusion, or chest pressure. Treat sudden breathing difficulty with facial or throat swelling, hives, or wheezing as an emergency because it may be Anaphylaxis. Urgent assessment is also needed for breathlessness with coughing blood, a very fast or irregular heartbeat, or marked weakness.

Does the position in which I sleep change the possible cause? Should my lungs, heart rhythm, or blood count be checked? How should I use my prescribed inhaler during an episode? Which warning signs mean I should seek emergency help?