Hi @TotHappy and welcome to this thread.
I’m sorry to hear everything you have been going through.
There is a very high correlation between ADHD and addiction. My Ex also has ADHD and certainly used alcohol and drugs to self medicate/ numb his symptoms. He was medicated for a while but he abused the stimulant medication so has been unmediated ever since. Last time I heard he was considering non stimulants, but given how erratically he takes his anti depressants, I can’t imagine there is much use.
Regardless of the cause though, living with someone in active addiction is hellish. A psychiatrist once also told Ex that not everyone who has ADHD is an addict so it is possible to have ADHD and be sober! It’s your life too, and your children, and you are allowed to live a peaceful and calm life where you are not treading on eggshells. Growing up around an addict can be very damaging for children (I am also the child of an alcoholic).
You really need some support for you - to help you work through what you are and aren’t prepared to put up with for your life. Some people on here have found Al Anon really helpful, but it can depend on the local group
itself and some of them do definitely seem like they push spouses to stay together out of the belief that the addict is most likely
to recover in a stable family environment. I found SMART friends and family (online meetings, secular approach, not 12 step) more helpful. It helped me to see that I could not love Ex better (there would be no addicts if all it took was love and a relationship!) and he wasn’t prepared to do the hard work of sobriety. I wanted him to give up the alcohol (and drugs as he also abused coccaine at times) more than he wanted to.
My Ex was a functional alcoholic but it is often only ever an illness or shock or major event away from disfunctional. Ex is now utterly disfunctional and his personality has changed and his mental capacity is shocking.
Your DH should definitely ask for a referral to your local drug and alcohol support services. But ultimately, you cannot do this for him.
you didn’t cause it. You cannot control or cure it. The only choices you have are what your life looks like. I did have to split up with Ex and I was a shell of myself by the time I did - anxious all the time about his moods, constantly defending myself or justifying as an alcoholic needs to find someone or something to blame for their continued drinking, devastated with every binge or relapse.