...and get your children the help they need.
I only say this because my wife is at the beginning of DD, and we have eight children, the oldest being 15. Our oldest had a severe psychotic episode over the summer and is still not back to where he was before everything began. He has been in three different inpatient psychiatric institutions in three months, and along the way I have had a lot of time to talk to many different doctors, therapists and social workers about his background and history.
What has come through loud and clear is that since his mother is DD, he has a strong genetic predisposition for a psychosis. If you add the fact that I had cancer two years ago, you also have a very stressful situation for a child to be in, and he was only 12 -- a very vulnerable age. Cancer is probably not an issue for most, but if a parent is in a full-fledged DD episode, that would be stressful on any child. So then you would have a strong "genetic loading" and very stressful situation for a child, and the result could be a psychosis later down the road.
It didn't help that our son also smoked pot. When an adolescent smokes pot, it greatly increases the risk factor for a psychosis. You can also tell your kids that.
I only write this so those with DD spouses and children can attend to the needs of their children and get counseling for them if necessary. Looking back, I wish we had done that with our son but we didn't have that knowledge at the time, and, hey, I got better, so it seemed as if everything was fine again.
This is just something I have learned along the way with DD: there are genetic factors that are passed down to the children, and the stress of DD effects children also. I hope this helps someone!