The Babyshambles star was set to take to the stage at a porn theatre in Graz, Austria on Thursday (28Aug08) to perform before premiering his new autobiographical film.
But the rocker allegedly went on a drugs and drink binge before he was due to perform, according to Britain's The Sun newspaper.
Doherty was reportedly left unconscious after collapsing, and had to be revived by medics before taking to the stage four hours late.
The star is said to have refused to be taken to hospital for further treatment and managed to play a 45-minute set to fans.
Doherty's agent was unavailable for comment as WENN goes to press.
Source: WENN