I am sorry to hear that you are going through all this. It sounds to me as though there may be more than migraine involved here! Although having said that, Hemiplegic migriane can produce stroke like symptoms that can be quite scary unless you know what is happening!! These symtoms can include loss of power on one side of the body, facial numbness/tingling etc
I have not understood migraine to be a degenerative condition as such, although it can worsen for a while and sometimes it can seem as though the older you get the worse it gets.
The best person to talk to about this is a Neurologist who is a Headache Specialist. I hope you can get some answers soon, please let us know how you get on.
Co-Moderator of the Migraine/Headache Forum