Detectives in Derbyshire are having to take more time off because of the stress of working on more and more sex offence cases, according to their chief constable.
Mick Creedon said the force was struggling with the extra workload.
Psychological disorders had become one of the main reasons for absence, he said.
Figures show recorded sexual offences rose 16.8 per cent between April and August.
The force said it had a robust support mechanisms in place, but it was under increasing pressure.
Mr Creedon said a ‘vortex’ was being left after officers left and the rising volume of sexual offences was to blame.
“Seasoned detectives have broken down and had to leave. People are starting to really struggle with this,” he said.