Thanks for writing in.
As you have said, you are prone to regular panic attacks.
You are also taking consultation form your Psychiatrist
for this problem and have regular appointments.
I would suggest you to make a log of your panic attacks and what are the symptoms following it, such as light headedness, headaches
By going through your symptoms in detail, your Psychiatrist will be in a position to recommend you for a CT scan
of the head. It is a bit expensive and is done only under medical recommendation.
As for the money part, you could request your Psychiatrist to refer you to any charitable or state funded hospital where it is less expensive.
Hope this helps.