I was recently diagnosed with arteriovenous malformation. how to treat this?

Depends: On location. To broad to answer without more info.

Several approaches: There are surgical and non surgical approaches to treating AVMs. Most commonly now is embolizing the vessels with coils of wire, beads or glue, injected through a catheter durectly into the AVM. Surgery may involve clipping feeding vessels or total removal, and the use of Proton Beam iradiation.