A man who suffered chronic postoperative nerve pain claims a plunge into extremely cold water helped cure his pain.

His case has been examined and published by doctors in BMJ medical journal, who suggest a brief swim in freezing cold water may be an effective alternative to strong painkillers and physical therapy.

Cambridge University’s  Dr Tom Mole, who authored the study, says although not suitable in all cases, he hopes cold water treatment provides new hope to people suffering from pain following surgery.