Dog Having Seizures Then Slipping Into Comatose State....help! Options

[bluedianey]

Hi, my dog, my "baby" Gizmo a Rat Terrier/Pom is 3 1/2 and just started having seizures. his first one he was stiff and laying on his side, no movement but his eyeballs. He was tested for lymes, he was positive so we treated and thought all was ok. Then a few months later he was trotting along, legs crumpled, he fell, looked like strings pulled his legs straigt and pulled him onto his back, legs straight in air, then he rolled over and trotted off. a week ago he started getting clingy a few days before his next seizure. He was stiff and walking funny. Then on the day of....he started barking (he never barks) and I took him out to potty, I noticed immediantly he was totally blind...couldn't see a thing. Then he fell, got up, fell, 5 times. I picked him up and brought in house. he layed on carpet and head would drop and he would jerk it up, then drop and hed jerk it up. I picked him up and he was like steel....his body arched stiffly to right and was rigid. I layed him on sofa by me, his head dropped and he rolled to lay on side...his eyes tuned forward into fixed gaze with eyes half lidded and he slipped into a coma. he was completely unresponsive to anyting for almost 2 hours. My vet doesn't seem to believe me and is not doing anything... HELP!!!!!! I am afraid with the severity of this seizure his next might be his last...HELPPPPPPPPPP