Difficult or labored breathing. Dyspnea is a subjective feeling only the patient can rate, e.g., on a Borg scale. [ http://www.ncbi.nlm.nih.gov/pubmed/16914301 https://orcid.org/0000-0002-0736-9199 ]
Synonyms: Difficulty breathing Dyspnoea Difficult to breathe Trouble breathing Shortness of breath Breathing difficulty Abnormal breathing