A man who stabbed his girlfriend in the neck had stopped taking the medication he needed to control his personality disorder, a court has heard.
The High Court in Edinburgh was told that Alec Allan, 30, stabbed Julie Smith twice as they sat in his flat in Aberdeen.
Ms Smith took painkillers and made a cup of coffee after the attack, only realising the severity of her injuries when her wounds began to pour blood minutes later.
Allan dialled 999, claiming that Ms Smith had been stabbed in the street and robbed as she returned from a nearby cash machine. But police found his broken knife and her blood-stained nightdress in Allan's flat on Lewis Road.
Medics said it was "lucky" the blade had missed MS Smith's carotid artery.
On Friday, Allan pleaded guilty to assaulting Ms Smith to the danger of her life on September 9, 2012.
Advocate depute Chris Dickson, prosecuting, said Allan had a psychiatric history going back 15 years and had been diagnosed with a dissocial personality disorder. He was also dependent on drugs, the court heard.
Allan and Ms Smith began a relationship in July last year and just five days before the attack Allan told a psychiatrist he felt "very positive" about it.
Previously Allan had spoken of "intrusive thoughts" and "doing harm to others" the court heard.
Mr Dickson said about two days before the attack Allan stopped taking his medication and his whole demeanour changed. Ms Smith left her parents' home to spend an evening with Allan and they were drinking vodka when an argument began over her ex-boyfriend and the attack took place.
Judge Lord Pentland called for background reports and remanded Allan in custody pending sentence in September.
The judge said Allan had "a concerning record" after hearing he had four previous convictions for violence.
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