My father is 69 and has always been very short tempered and is well known for it. lately however this has got worse and worse, he is now very aggressive and unfortunatly he is the owner of a company employing 100 people who are all terrified of him. He is not married and has no partner and I am the only child and work for the company as well. His memory is getting worse and he constantly is loosing things and forgetting names and keeps going on about how it must be alzheimers. He also has become paranoid about his health and has been to a lot of doctors privatley and abroad about different illnesses and no one can ever find anything wrong with him, we have had brain scans, heart checks, lung checks etc etc. The problem is made much worse at work as he has a captive audience that have to listen to him moan and rant and rave and to put things in perspective he would go off the scale 10 out of 10 screaming bright red in the face, swearing if for instance one of the girls didnt answer the phones properly or even went to the toilet. He has made one of our workers so ill by abusing him verbally that I suspect he is having a break down. If things are getting bad at work I have sometimes been forced to put vallium in his drinks just to calm things down and the whole situation is making me ill. I have talked this through with my doctor, his doctor, nurses, phsyciatric nurses and doctors and no one will or can help as he does not think he has a problem. I have tried talking about this to him but he wont listen at all and dismisses it out of hand. This week alone I have had 2 members of staff in my office crying and he was nearly arrested at the airport for going off at a shop worker who didnt serve him quickly enough. I cannot get him to leave the business as it has always been his life and he has no friends, interests, or distractions other than work and he is here 7 days a week. The situation is getting worse by the day and I am at my wits end and dont know what to do as I have tried every option I can think of. I would gladly leave the company and turn my back on him but I have a responsibility to the staff and company.