Exercise-induced respiratory symptoms turn into an "epidemic" among adolescents

The diagnosis and treatment of exercise-induced asthma are well characterized.

However, other syndromes are relatively common but not well-established in the literature with high-quality evidence:

- exercise-induced vocal cord dysfunction
- exercise-induced paradoxical arytenoid motion
- exercise-induced hyperventilation

Exercise-induced dyspnea differential diagnosis includes exercise-induced vocal cord dysfunction (EIVCD), exercise-induced laryngomalacia (EIL) and more (http://buff.ly/1jzVPHS).


Laryngoscopic view of normal vocal folds. Image source: Wikipedia, Gray's Anatomy, public domain.

Controlled studies are necessary to define diagnostic and treatment algorithms for young patients experiencing respiratory symptoms during exercise who do not respond to asthma treatment.

Exercise-induced bronchospasm (EIB) (click to enlarge the image):



ATS practice guideline: exercise-induced bronchoconstriction:



References:

An official American Thoracic Society clinical practice guideline: exercise-induced bronchoconstriction. Am J Respir Crit Care Med. 2013 May 1;187(9):1016-27. doi: 10.1164/rccm.201303-0437ST.
http://www.ncbi.nlm.nih.gov/pubmed/23634861
Exercise-induced respiratory symptoms: an epidemic among adolescents. Tilles SA. Ann Allergy Asthma Immunol. 2010 May;104(5):361-7; quiz 368-70, 412.
49-year-old man with childhood asthma who was told he would never be able to do exercise runs a marathon every day for a year. CNN, 2011.
Outdoor exercise is good for you, but if you have nasal allergies, take these 6 precautions. WebMD, 2011.
Exercise-induced bronchoconstriction - Am Fam Physician 2011 review.

Related:

Exercise-induced laryngeal obstruction (EILO) in Daily Mail http://bit.ly/RDWBDF