Lee Byung Hun opened up about his past battles with a panic disorder.

The actor guest starred on a recent SBS' special which cast a spotlight on the past, present and the future of his career.�

SEE ALSO: Lee Byung Hun reveals he used to suffer from depression

The show revealed a broadcast of SBS power FM's 'Cultwo Show' which was recorded earlier in the month where Lee Byung Hun looked nervous but bright as he shared that he hasn't been on a radio show in a while.

However, Lee Byung Hun was seen putting his head suddenly under the table, unable to get back up for a while. He was having a panic episode.�

During the interview with SBS special, he explained, "I thought it was going to be a broadcast accident at that time. It was either going to be me fainting at the spot or me apologizing and coming out (with my panic disorder) because I couldn't hold it any longer."

He added, "My rationality of 'If you're going to do it, do it right' and my body's symptoms of 'I don't care if the show is live or not, I need to live' were fighting against each other."

Lee Byung Hun also revealed that he keeps his medicine for his panic disorder nearby him at all times.