question: I have some sort of allergy where my skin gets swollen like mosquito bites & it happen all over my body. it itches a lot &and goes away in about 3/4 hours. I'm not sure it is just only because of dust, as often it simply happened out of nowhere. please suggest me a medicine (capsule, tablet) for instant relief. I have taken Cetirizin tablets & seems to help a bit, but I'm not sure it has any real effect or side-effects.