A car park security guard who says he suffers from post-traumatic stress disorder after being thrown against a wall by an irate motorist is claiming more than $2.6 million in damages. Yan Kwok-yue, 35, claims ever since Beau Dong Shu-kei assaulted him on August 30, 1998, in the AIA Tower car park, North Point, he has suffered headaches, back and neck pains, and post-traumatic stress disorder, post-concussional disorder and depression. The former security guard also says that he is unable to pursue his intended career as a construction site safety officer. He alleges he has been deprived of $1.62 million in earnings. His total claim of $2.65 million includes $600,000 for pain, loss and suffering, and $400,000 for future treatment, plus expenses. Mr Dong, who admitted liability in the Court of First Instance civil case but disputes the extent and permanence of Mr Yan's injuries, was found guilty of assault in Eastern Court in November 1998 and fined $1,000. The court then heard the assault centred around a dispute over a parking card. Mr Dong had tried to leave the car park without paying for parking. He got into an argument with a car park supervisor and Mr Yan, the security guard, was alerted. When Mr Yan walked over, Mr Dong pushed him against a wall. Mr Yan spent two days in hospital after developing a blood clot in his head. Yesterday, an expert in post-traumatic stress disorder, Dr Karem Singer, who examined Mr Yan in June last year and again earlier this month, told the court his post-concussional disorder had not diminished. He said Mr Yan's post-traumatic stress disorder was chronic and was coupled with the effects of depression. The hearing continues before Deputy Judge Peter Longley today.