Hi, I'd like to help you with your question.
From what you are saying it sounds like your husband's problem has gone from changes in personality when drinking to a physical problem. He may have had the physical symptoms before, but it was covered by the alcohol.
Some of the symptoms you have described can be explained by a number of disorders. He needs to be seen by a physician immediately. They can screen him to find out the cause of the symptoms and if needed, start him on treatment.
If a physical diagnosis is ruled out, I highly recommend your husband talk with a counselor about unresolved issues he may have that caused the original personality changes. Although alcohol is known to change someone's personality, any mental health issues should be explored first. He should also be screened for alcohol abuse. The therapist can either see him for that as well or make an appropriate referral.
I hope this has helped,
I consulted with another professional on your question. They agreed that it seems more physical than emotional. The only emotional disorder that can remotely answer the symptoms you describe is dissociative disorder. But this disorder is very rare. He would need to see a therapist for an evaluation to determine if he has this disorder.
Has your husband been screened for a seizure disorder? From what I understand, a CAT scan does not show seizure disorder. Although he has seen his regular doctor, maybe an appointment with a neurologist might be indicated here. The symptoms he is having point more towards screening for a physical disorder than a mental health one.
My best to you,