Actor Lee Byung Hun spoke frankly about his struggle with an ongoing panic disorder.

SEE ALSO: Kep1er to disband in July as scheduled with no contract extensions

In an interview for the November issue of 'Esquire' magazine, Lee Byung Hun revealed, "I started suffering from a panic disorder a few years ago. I'm the kind of person who gets nervous easily. From the instant my panic disorder starts up, I can't breathe. I don't know why it happens."

He added, "During times when I can't run away like at fan meetings, radio, or other public appearances, I can't hear anything or think about anything. I wonder, 'What do I do? Should I just run away? Would that be okay,' for at least 10 minutes. In the end, I decide to just faint there if I must and hold out. When I'm extremely afraid, I just ask myself, 'What is there to life,' and move on. I tend to be optimistic."

Considering his long list of film and drama projects, this is unexpected!