Can stress, Panic Attack Disorder or anxiety attacks cause dizzines vertigo?

Can stress, Panic Attack Disorder or anxiety attacks causedizziness (lighheadedness and unstable), vertigo (whoosy and spinning sensations), throat constriction (feeling of being unable to swallow), nausea (sometimes followed by urge to vomit), and loss of appetite due to nausea? What are other possibilities? (Could it be middle ear infection? Viral sore throat?) Or is it stress induced?

I've been through attacks of axiety or panic attacks when applying to schools and when accepting letters were recieved and while taking Standardized Tests. Could this be a stronger version of what I had? I had low blood pressure, hard to find pulse, low oxygen levels and sweating, but never before anything like this (and this is contant for abut 10 days now). I had a heart condition (Atrial Septal Defect- hole in my heart that was repaired through suergery when I was 8). I am cleared by the cardiologist and the doctor said I was fine when I visited her office and said not to worry however its been continuous and I've lost 4 pounds due to loss of appetite and diet of liquids because I can't swallow solids. Help and THANKS.