Migraine: It is unlikely for "migraine" to cause change in voice. They are unrelated. If your "frequent / unmanaged migraines" are disabling, which they are based on your report of blackouts, you are a danger to yourself and others. I don't see how a doctor would not recommend revocation of your driver's license. You should absolutely never get behind the wheel of a car until your condition is controlled.
Answered 10/2/2014
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