[ryan-allen]

OP's story sounds a bit like my grandfathers, he jumped around many jobs over his lifetime. According to my aunt he would 'work in a job and learn about it until he got bored, then moved on to something else he was vaguely interested in'.

I suspected he might have had ADHD, and I certainly do have ADHD, and ADHD is hereditary!

If I didn't accidentally fall into software I probably would have been the same. I agree with your idea that they should talk to a professional (ideally psychiatrist in my opinion) and check for any conditions.