Editing Asthma (section)

====Allergens====
Asthma is associated with exposure to indoor allergens.<ref name="pmid21301330">{{cite journal | vauthors = Ahluwalia SK, Matsui EC | title = The indoor environment and its effects on childhood asthma | journal = Current Opinion in Allergy and Clinical Immunology | volume = 11 | issue = 2 | pages = 137–43 | date = April 2011 | pmid = 21301330 | doi = 10.1097/ACI.0b013e3283445921 | s2cid = 35075329 }}</ref> Common indoor allergens include [[dust mite]]s, [[cockroach]]es, [[animal dander]] (fragments of fur or feathers), and mould.<ref name=Arshad>{{cite journal | vauthors = Arshad SH | s2cid = 30418306 | title = Does exposure to indoor allergens contribute to the development of asthma and allergy? | journal = Current Allergy and Asthma Reports | volume = 10 | issue = 1 | pages = 49–55 | date = January 2010 | pmid = 20425514 | doi = 10.1007/s11882-009-0082-6 }}</ref><ref>{{cite journal | vauthors = Custovic A, Simpson A | title = The role of inhalant allergens in allergic airways disease | journal = Journal of Investigational Allergology & Clinical Immunology | volume = 22 | issue = 6 | pages = 393–401; qiuz follow 401 |year=2012 | pmid = 23101182 }}</ref> Efforts to decrease dust mites have been found to be ineffective on symptoms in sensitized subjects.<ref name=Gotzsche2008/><ref>{{cite journal | vauthors = Calderón MA, Linneberg A, Kleine-Tebbe J, De Blay F, Hernandez Fernandez de Rojas D, Virchow JC, Demoly P | title = Respiratory allergy caused by house dust mites: What do we really know? | journal = The Journal of Allergy and Clinical Immunology | volume = 136 | issue = 1 | pages = 38–48 | date = July 2015 | pmid = 25457152 | doi = 10.1016/j.jaci.2014.10.012 | doi-access = free }}</ref> Weak evidence suggests that efforts to decrease mould by repairing buildings may help improve asthma symptoms in adults.<ref>{{cite journal | vauthors = Sauni R, Verbeek JH, Uitti J, Jauhiainen M, Kreiss K, Sigsgaard T | title = Remediating buildings damaged by dampness and mould for preventing or reducing respiratory tract symptoms, infections and asthma | journal = The Cochrane Database of Systematic Reviews | volume = 2015 | issue = 2 | pages = CD007897 | date = February 2015 | pmid = 25715323 | pmc = 6769180 | doi = 10.1002/14651858.CD007897.pub3 }}</ref> Certain viral respiratory infections, such as [[respiratory syncytial virus]] and [[rhinovirus]],<ref name=M38/> may increase the risk of developing asthma when acquired as young children.<ref name=NHLBI07p11>{{harvnb|NHLBI Guideline|2007|p=11}}</ref> Certain other infections, however, may decrease the risk.<ref name=M38/>