In conclusion both SLIT and SCIT can be used in asthma associated with rhinitis (which is the most common condition), provided that asthma is adequately controlled by pharmacotherapy. In such case, a measurable clinical benefit on asthma symptoms can be expected.
On the other hand, SIT cannot be presently recommended as single therapy when asthma is the unique manifestation of respiratory allergy.
Source: Clinical and Experimental Allergy)
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