Can seasonal allergies cause itchy skin? if so, are there tests to confirm the cause? how is it treated? how can you tell allergies from eczema?

Allergies = Itching: One of the most common symptoms associated with allergies is itching. The itchiness can occur in your nose, eyes, mouth, or skin. Allergy testing will document what items you are allergic to as well as telling how allergic you are to each item. Eczema is often allergically mediated and may simply be another manifestation of your allergies.