Taking antihistamines is common for relieving the itch sensation from a mosquito bite. This itching sensation is one of the side effects of histamine, which is produced as part of the immunological response.
In this answer How do antihistamines work? it is claimed that antihistamines won't have any effect in the immunological system, as it just blocks the symptoms/effects of histamine itself. But these effects are needed for certain type of immunological response, for example vasoconstriction to increase vascular leakage, to allow for increased access into the affected areas (I assume).
Is blocking the effect of histamines actually counterproductive in the healing process of an itching insect bite?