However, there is also proof of more harm, such as increased dyspnoea.
From the sciencedaily.com
Kelly M. Oral morphine as symptomatic treatment of dyspnoea in patients with advanced cancer.
From the en.wikipedia.org
Effects of morphine on the dyspnoea of terminal cancer patients.
From the en.wikipedia.org
Ignoring his illness, he repeatedly went to inspect the Swedish forces near Gothenburg, and soon broke down with chills, headaches and dyspnoea.
From the en.wikipedia.org
More examples
Dyspnea: difficult or labored respiration
(dyspnoeal) breathless: not breathing or able to breathe except with difficulty; "breathless at thought of what I had done"; "breathless from running"; "followed the match with breathless interest"
Dyspnea or dyspnoea , (from Latin dyspnoea, from Greek dyspnoia from dyspnoos, shortness of breath), also called shortness of breath (SOB) or air hunger , is a debilitating symptom that is the experience of unpleasant or uncomfortable respiratory sensations. ...
Alternative spelling of dyspnea
Breathlessness, possibly caused by asbestos damage to the lungs