However, there are numerous serious causes to consider.
Berliner D, Schneider N, Welte T, Bauersachs J.The differential diagnosis of dyspnea.Dtsch Arztebl Int.
2016;113(49):834-845. doi: 10.3238/arztebl.2016.0834
American Lung Association.How Can Oxygen Help Me?

Hinterhaus Productions / Getty Images
MedlinePlus.Breathing difficulties - first aid.
American Red Cross.Adult/child choking.
American Lung Association.Learn about shortness of breath.
2017;16(1):3. doi:10.1186/s12912-016-0196-9