The atmosphere at Westminster has become so "unbearable" due to expenses revelations that a suicide is feared, one MP named in the row has warned.
Tory Nadine Dorries, who the Daily Telegraph said only spends weekends and holidays in her designated main home, warned MPs were "beginning to crack".
But Labour's Stephen Pound said MPs did not deserve sympathy, adding: "It's nobody's fault except our own."
Ms Dorries insisted on her blog that she acted within the rules.
The Mid Bedfordshire MP wrote that the mood at Westminster, as MPs prepared to return to their constituencies for a recess week, was so grim that people were constantly checking to see if others were OK.
"Everyone fears a suicide," she said.
"If someone isn't seen, offices are called and checked."
In an interview with the BBC, Ms Dorries, who was a nurse before she came into politics, said MPs were walking around "with terror in their eyes" and likened the atmosphere to that surrounding Senator Joseph McCarthy's "witch-hunts" of Communists during the 1950s.
It's like a slasher movie where every morning we come in and see who's still alive
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.