Last night I had very strange symptoms leading up to a panic attack, symptoms that were slightly disconcerting.

I was unable to complete a sentence, and my speech became very slow and slurred. I became frustrated trying to speak, because every time I tried I stuttered what I wanted to say, or was unable to finish the sentence. Then I was completely unable to speak then had a panic attack.

I'm wondering if anyone else has every experienced this, or is it any need for concern.