red light disease

red light disease
 n.— «Well, I think anybody in those jobs who has been doing it for a long time, they can be demanding. I think they all have that red light disease, when that little light in front of the camera goes on. But Gumbel is a professional. And, look, he has another gig over at HBO doing “Real Sports.”» —“Wolf Blitzer Reports” CNN Apr. 4, 2002. (source: Double-Tongued Dictionary)