While, I agree that all of your symptoms may be associated with stress and panic disorder, and your last year CT scan was normal, all of these symptoms, do warrant a physical examination, especially neurological. That will rule out any organic cause of this and will relieve the anxiety.
Your physician may consider an additional medications for your panic disorder.
Please feel free for your follow up questions.
Yes, they can be symptoms of stress, as I previously also mentioned. Please don't worry, they are likely to go off themselves, if you relax.