Exams.. i have an utter dread of them, so badly that in the past when I took my driving test theory, which is now done on a computer screen, i couldn't feel my hands or feet, I think the blood rushed to my core in an adrenaline flight or fight thing and this meant I couldn't feel fingers to touch the touch sensitive screen...
However, I had to do a practical exam more recently.. i was being video'd and also observed by my tutor... it wasn't nice and for a moment there I completely froze... I wanted to runnnnnnnnnn but the moment passed and I actually settled down and just concentrated on responding to what was before me...
I am not sure my exam phobia is cured but it was a positive experience and gave confidence that I faced an exam and could handle it :)