Ive been getting random swelling with itching on different parts of my body, sometimes even on my lips. It can happen anywhere from my head to my legs. Ive noticed it seems to happen more when I eat something oily. When I take cetirizine or another anti-allergic, the swelling goes away. What could be causing this, and is there something I should do to prevent it?

You can take it daily to help manage and prevent these allergic reactions. Additionally, try to identify and avoid the specific oily foods that may be causing these reactions.