Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Levocetirizine is used to treat symptoms of year-round (perennial) allergies in adults and children who are at least 6 months old. It is also used to treat symptoms of seasonal allergies in adults and children who are at least 2 years old.
Intravenous Immunoglobulin (IVIG) is a plasma product used in the treatment of certain conditions related to the immune system.VIG therapy is done by administering medication directly into the bloodstream to help treat autoimmune diseases, immune deficiencies, and certain kinds of infections.
IVIg â this can be effective for severe skin disease that does not respond to more standard treatments noted above, and can be used in patients that have an associated cancer or infection (as this medication does not suppress your immune system)