Editing Pollen (section)

===Treatment===
{{main article|Allergic rhinitis#treatment}}
[[Antihistamines]] are effective at treating mild cases of pollinosis; this type of non-prescribed drugs includes [[loratadine]], [[cetirizine]] and [[chlorpheniramine]]. They do not prevent the discharge of [[histamine]], but it has been proven that they do prevent a part of the chain reaction activated by this [[biogenic amine]], which considerably lowers hay fever symptoms.

[[Decongestants]] can be administered in different ways such as tablets and [[nasal spray]]s.

[[Allergen immunotherapy|Allergy immunotherapy]] (AIT) treatment involves administering doses of allergens to accustom the body to pollen, thereby inducing specific long-term tolerance.<ref>{{cite journal |last1=Moingeon |first1=P. |last2=Batard |first2=T. |last3=Fadel |first3=R. |last4=Frati |first4=F. |last5=Sieber |first5=J. |last6=Overtvelt |first6=L. |title=Immune mechanisms of allergen-specific sublingual immunotherapy. |journal=Allergy |date=February 2006 |volume=61 |issue=2 |pages=151–165 |doi=10.1111/j.1398-9995.2006.01002.x |pmid=16409190 |s2cid=36043612}}</ref> Allergy immunotherapy can be administered orally (as sublingual tablets or sublingual drops), or by injections under the skin (subcutaneous). Discovered by Leonard Noon and John Freeman in 1911, allergy immunotherapy represents the only causative treatment for respiratory allergies.