Without wanting to get into an argument as it won't be beneficial.
An alcoholic is dependent on alcohol.
I thought I was an alcoholic and so does my mrs still.

I saw an expert who said I wasn't an alcoholic but I am an excessive drinker.
I'm going to abstain from drinking tonight.
The main thing is chunk has sought help for his problems so regardless of what he is, hopefully he gets sorted now before it escalates.
I say problems as it's pretty obvious he's finding it hard to cope with all the stresses and demands in his life.
Some decent counciling for a start.
Time for him and his mrs to look forward to etc.
People on here with disabled children may know of helpful organizations.
The council for instance have to help.
https://www.gov.uk/help-for-disabled-child
I imagine some people are too scared or proud to ask for help but end up bogged down with no time to enjoy themselves and then it spirals.
Anyways am waffling.
Good luck to the lad and hopefully he gets sorted.