Since I became ill and long before my diagnosis my Sons have both been brilliant, we talk openly about everything. My youngest takes me to all my appointments even if it involves taking time off work and the eldest lives abroad but rings me virtually every day to see how I'm doing, we talk for around an hour at a time and cover everything under the sun. If I want to talk about my illness (not likely) they are happy to talk about it in detail, more than me. It's me that's bored with the whole thing and would talk about anything rather than IT.
I've got another 'keen'... Ouch!