His personality began to change after he had the heart attack and retired. A couple years ago he was under a lot of stress about his heart condition and he became paranoid and was convinced that I was out to harm him. He filed for a divorce and at that time he changed the beneficiary on his retirement accounts from me to his sons. He also filed a transfer on death, leaving our condo to his sons, but on the affidavit, he falsely stated that he was not married. Then, a month later, he realized he was having mental health issues and started taking benzodiazepines and SSRI and he calmed down and canceled the divorce. Unfortunately, he stopped taking the medication shortly thereafter.Whenever he drives in the car or goes into stores, he becomes extremely agitated and yells and swears. I’m starting to wonder if he could be in the early stages of dementia. I confronted him about changing the beneficiaries and he came completely unhinged. I don’t know what to do at this point.
If he won't go in for a cognitive evaluation, it sounds like he would see his cardiologist, in which case you could ask (in advance) for the cardiologist to refer him to a neurologist. Heart issues can affect the brain.
As suggested below, see a lawyer about all the finances, and what your rights are should you become divorced, or should your husband be deemed incompetent. Also ask how to protect your finances from any rash actions he might take.
If you ever feel threatened, don't hesitate to call 911. Tell them he has been having mental health issues and needs an evaluation for safety, both is and others. This might be the way to get him an evaluation and back on medications to calm him.
I'm sorry. This sounds scary for you.