Hi there ,
Welcome to Just answer !
Well, i can understand your predicament , as being a nice and kind person you had said yes to that man , since you did not want to hurt him .
Also, being a psychiatry expert myself , i would be the last person to discourage people to give a helping hand to the psychiatry patients , but your situation is different ,as first of all i believe if that man is a paranoid schizophrenia patient , then he should have someone to care for him , as you never know when these patients can go into psychosis and once in psychosis they loose insight and start living into a so called dream world , also since he is a case of paranoid schizophrenia then there more chances for him to have persecutory delusions in which a person starts believing that people are trying to threaten him and plotting against him to cause physical or emotional harm..
From what you have described about this man , as he sometimes says that you are threatening him , despite the fact that you are trying to comfort him and the very next moment he invites you for lunch , such kind of mood fluctuation and temperamental changes , plus loss of objectivity in conversation makes me feel that he is not mentally stable at the moment , and although he needs support and help at this very time , but you shpuld not be that person , simply because he may get into psychosis and become violent and abusive , which will be of grave danger to you.
So,my earnest opinion is that since you are not familiar with the man's background and history , plus he being a patient of paranoid schizophrenia , i would ask you to tell him politely that you have some professional engagement which had come up out of a sudden , it is not possible for you to say no to your work appointment so ,you cannot have lunch with him this time.
Also, if you still go ahead with the lunch appointment with , there is a fair chance that he may start counting on you for support , and so you need to ask this question to your self that are you ready to take upon an important responsibilty of a man whom you have just met , plsu who is suffering from a psychiatry disorder .
So, just give this lunch meeting a bye and keep safe distances form him , untill you know every thing about his illnes and history , as it is always better to be safe than being sorry later.
I hope this helps . TAKE CARE..
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