What does dyspnoea mean?
Dyspnoea is the clinical term for difficult or laboured breathing — the unpleasant sensation of being unable to get enough air, familiar to most people as shortness of breath or breathlessness. It is not a disease in itself but a symptom, arising from conditions as varied as asthma, pneumonia, heart failure, anaemia, and anxiety. Doctors grade it carefully, distinguishing dyspnoea that appears only on exertion from the kind that strikes suddenly at rest, because that distinction can point to very different underlying causes. The word is standard in British medical English, spelled 'dyspnea' in American usage, and belongs firmly to formal registers: a patient might say they are 'winded' or 'struggling for breath', while a clinician writes 'the patient reports exertional dyspnoea'. Its Greek ancestry — literally 'bad breathing' — links it to a whole family of respiratory terms such as apnoea and eupnoea, making it a useful word both for precise description and for understanding medical language more broadly.
nounDifficult or laboured breathing; shortness of breath. It is the standard British spelling of the medical term also written 'dyspnea' in American English.
- Difficulty or discomfort in breathing; shortness of breath, especially as a symptom of heart or lung disease.
"The patient presented with acute dyspnoea and a persistent cough."
"She developed dyspnoea on climbing a single flight of stairs."
"The triage nurse flagged his sudden dyspnoea as a possible pulmonary embolism."
Rarely pluralised; the uncountable singular is almost always used even when referring to repeated episodes.
"The case notes recorded several episodes of severe dyspnoea during the night."
The term was already in use by Hippocrates over two thousand years ago — ancient Greek physicians were describing exactly what modern chest-clinic charts still record as 'dyspnoea'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dyspnoea
Dyspnoea comes from Greek 'dyspnoia', formed from 'dys-' meaning 'difficult' or 'bad' and 'pnoē' meaning 'breath', related to the verb 'pinein', to breathe. The term passed into Latin and entered English medical vocabulary in the early modern period, retaining its classical form. It shares its root with related terms such as apnoea ('without breath') and eupnoea ('good or normal breathing'), all built on the same Greek element for breath. American English typically drops the 'o', giving 'dyspnea'.
Related word forms
How dyspnoea is actually used
A formal, clinical term found chiefly in medical writing and speech; everyday conversation prefers 'shortness of breath' or 'breathlessness'. Spelled 'dyspnea' in American English, so the spelling itself signals register and regional variety.
Easily confused with dyspnoea
Dyspnoea is difficulty breathing, whereas dyspepsia is indigestion or an upset stomach.
Dyspnoea refers to difficulty breathing, while dysphagia refers to difficulty swallowing.