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now I have no use of my left side
Very sorry to hear about your stroke. Was it ischemic (caused by a clot) or hemorrhagic (by a bleed in your brain)? What were the symptoms you presented with? Headache and neurologic deficits? Did they do a CT scan? I've handled a number of cases like yours and would be glad to talk to you.See question
was in hospital with head injury, I dont recall event, dont feel like my rights were protected
Depending on what type of "Agreement" you entered into, you may be able to dispute it (i.e. attempt to nullify a contract) by demonstrating you did not have the mental capacity to enter into a contract at the time. The burden will be on you to prove this, and if the other party to the contract has relied to his/her detriment (i.e. paid money, etc.) then "equity" may require you to repay whatever the other party lost. sSee question