Actor Cha Tae Hyun revealed he suffers from panic disorder on 'Knowing Brothers'.

On the March 2nd episode, Cha Tae Hyun featured as a guest alongside Hong Kyung Min and Min Kyung Hoon. The actor pointed towards Lee Sang Min, who had previously revealed to viewers he suffers from panic and anxiety disorder, asking, "When did you start suffering from panic disorder?"

Lee Sang Min responded he'd been suffering from the disorder for 6 years, and Cha Tae Hyun said, "I guess I'm the sunbae then. Now that I'm trying to think of answers to the questions, I guess at 6 years, you're at the stage when you carry around medicine everywhere."

He continued, "I haven't overcome it, but I don't carry prescriptions around." Seo Jang Hoon then commented, "I didn't know Cha Tae Hyun had panic disorder."