J.W.
I would only be concerned if the bites or reaction is extensive. As a child living in an area with many red ants, and me being as clumsy as as was, I frequently had lots of bites. They itched - yes - but were not a big deal. There are some lotions and creams you can use to soothe the itching - same as for any other bites or allergic type reactions.
On the other hand, down in Central America, a classmate got his leg bitten terribly by a swarm of toxic ants and his leg swelled up like a tree trunk. Yes - in a case like that, it is something to be concerned about, and he needed hospitalization and antibiotics and other meds.
But usually - it is itchy but not a big deal unless you see it swelling up or later getting infected (which can happen from scratching it).