How Can severe Migraine Along With Nausea Be Treated?

My husband has been having severe migraines, complete with nausea, tunnel vision, pain, and sensitive to light. He has a compressed disc in his neck and he has thought that this was the issue. However, his entire spine has been in pain; he s been getting dizzy on a regular basis, and today he had what I would call a minor seizure. He was sitting looking at something and then he started to fall to the side. He couldn t control his arms or legs or movement and slowly started to go down to the ground. It passed and then he crashed not he couch sound asleep. He s had pain going down both arms, pinky finger on his right hand going to sleep.