My first husband was an alcoholic (going back 35 years now), and lost his job, became almost bankrupt, and in spite of attending alcohol clinics and counselling, refused to stop. At one time, he was sectioned, due to very abnormal behaviour (hallucinating). I had a 4 year old child at the time, and it was a truly awful time. Finally, he disappeared one weekend (not for the first time), and I vowed never to let him home again, and was called a dreadful wife by his family, who had no idea what I was going through. After he left, I found empty bottles everywhere! Hidden in the house and in the garage. Does your husband drive? If so, he is a danger to himself and others on the road.
You must take care of your own needs, you will never be able to reason with him - remember the three C's:
You didn't cause it
You can't cure it
You can't control it
You could contact Al-Anon, which is for the families affected by alcohol abuse:www.al-anonuk.org.uk/
Apart from liver damage, alcohol also destroys the nervous system, leading to peripheral neuropathy (numbness in hands and feet) and brain damage, which may be why he is exhibiting dementia-type symptoms.
My husband ended up living the life of a vagrant - after wrecking his mother's house where he had been staying, was in trouble with the police, and eventually ended up in a sheltered housing complex, where his drinking seemed to be more under control, He eventually died at the age of 55 from oesophageal cancer, caused by drinking.
I am so sorry you're going through this, it is an awful way to live, and I do wish you the best, and a more peaceful life.