US Edition Peter Shepherd, 59, who worked as a £50,000 IT manager before retiring, claims that after he was prescribed Cabergoline seven years ago his personality completely changed.
He estimates he started spending money on a high life, handing over £400,000 on for a £10,000 two week Caribbean cruise on the QE2 and hiring Bentleys, Ferraries and classic Jaguar cars.
He ran up £150,00 debts on 15 credit cards, became violent to his second wife and started wearing women's frilly underwear after developing a cross dressing habit.
Hull Crown Court heard that this led him to carrying out a ticket scam, selling tickets for Take That and Donny Osmond that didn't actually exist over eBay.
He carried out the ruse over an 11-month period from 2007 during which time 172 people paid £45,718 for tickets they never received.
Hull Crown Court heard Shepherd, who used to live in Brighton and sent his son to private school, underwent drastic character changes.
James Sampson, defending, said: "This is an exceptional case, but not one that's unique for a Parkinson's Disease sufferer.
"The benefit of that drug was that it materially increased his mobility and his ability to do things physically on a daily basis, but there were serious side-effect."
He told the hearing a neurology expert had found behavioural alterations in Shepherd which included marital aggression, violence and suicidal thoughts.
Mr Sampson added that the expert concluded that the drug reduced Shepherd's self control and sense of moral responsibility.
Shepherd, from Hull, wept and had to be consoled by his wife Deborah, 45, sitting alongside him after they admitted a charge of jointly transferring proceeds of the eBay scam to her bank account.
He also pleaded guilty to six counts of fraud relating to the ticket scam.
Recorder Henry Prosser described it as "wholly unusual and exceptional case" which would normally have attracted an immediate prison sentence.
He told Peter Shepherd it was agreed by two very eminent medical professionals that his responsibility for what he did was "very substantially" reduced by the side effects of the drug.
The judge gave him a conditional discharge and put Deborah Shepherd, who had two previous convictions for dishonesty, on a 12 month supervision order with 100 hours unpaid work.
Speaking after the hearing Shepherd said that it was when he started researching Parkinson's Disease on a US internet site that he realised he may be suffering side-effects of the drug and is now considering civil action.
* Last year Phillip Carmichael, 58, a former headmaster, received an absolute discharge after a judge at Oxford Crown Court ruled the Parkinson's Disease drugs cabergoline and ropinirole were responsible for him amassing thousands of indecent images of children.