Dad is Angry

Hello,

My dad was diagnosed quite recently with cancer and is undergoing chemo. Unfortunately since chemo started he doesn't want to see or hear from me anymore. There is no particular reason for it, we didn't fall out and I haven't said anything to upset him. 

In addition to this he is becoming increasingly angry towards my mum as I'm still in close contact with her. When she asks how he is day to day he says "How do you think I feel, I have cancer". Sometimes he has lashed out with various other negative angry statements too. I'm really worried about her, I know she is really struggling, it's like he is blaming her or taking his illness out on her. 

My dad is of a generation where I suppose he thinks it shows weakness to be seen as unwell. He has always been quite angry at times and used to get very stressed but this recent behaviour is 'off the charts'.

I feel quite selfish saying this and talking about 'me' when he has such a terrible illness but it's a total emotional rollercoaster and it's heartbreaking that he doesn't want to see or hear from me anymore. Sometimes I feel really angry about it and think how could he be like this and not want me in his life right now especially since we don't have a large family (there are just 4 of us) and other times I feel really sad that he is pushing away the only people in his life that love him. We are devastated that he has cancer and don't want him in pain or to be suffering.

He has been given various medications to stop certain side affects from the chemo cocktail but isn't taking these things to help himself. It's like he doesn't care about himself and is pretty much just giving up.

I'm a bit lost as to what to do or feel to be honest. It's super confusing. I'm sure other people have experienced this and would like to hear what they did/how to help/cope?

Thanks for reading x