DHE IV treatments

I have had migraines since I was a small child. I am now 42. I have seen numerous doctors and tried all kinds of therapies including: preventative drugs, abortive drugs, narcotics, OTC drugs, massage, yoga, botox, chiropractic, kicking and screaming and toughing it out. I have had various degrees of success with botox being the most helpful until my insurance stopped covering it. Stress is my main trigger. Now my Neurologist wants to try DHE IV therapy. It will require a 3 day hospital stay so I can be closely monitored. I have not heard of this before and have some reservations. Anyone have any experience??