Enabler.
He is 38 years old.
He is an adult.
You think he is A.D.D.
You think he may be bi-polar.
These are not confirmed.
These are excuses for irresponsible behavior and bad choices.
Look at the things you do know:
Taking him from doctor to doctor hasn't healed him.
Taking care of him by providing support of any kind is not helping him get better.
He might finally choose recovery when he has no more options.