Over the last couple months, our relationship has improved a lot. I was without hope for our marriage earlier this year. It was not until he stopped the testosterone shots that things started improving.
He realized the T Shots were causing most of the problems. Of course, his testosterone tests are showing a low level of testosterone. We don’t have sex. But he doesn’t have the out of control radical behavior he had while he took the shots.
He now only rarely has the odd delusions that caused me to post in the delusional disorder forum. Just last week he accused me of trying to sabotage him (the particulars don’t matter), but he took an innocuous fact and blew it way out of proportion to mean something bizarre.
His brain MRI was normal. He saw the neurologist on October 1 regarding his peripheral neuropathy, tremors in his hands, etc. he’s getting nerve conduction studies to evaluate the severity of of the nerve damage in his legs.
He will also be having a neuropsychological evaluation regarding some cognitive deficits and emotional changes. For the last several years I have been hoping for and gently moving him toward a neuropsychological evaluation. From this, we should get some diagnoses and treatment recommendations. It takes YEARS to get to this point. For anyone who is reading this blog, don’t give up and keep trouble shooting and seeking treatment.
It’s easier to give up, walk away and be done. I’m not sure why I have stayed through all this because it’s not like me. I was always the first to pull the plug and bail. Maybe I’ve become a better person? Maybe i care for him so much that I can’t abandon him to an ugly future alone.

Thanks for the update! I think if you hadn't already, perhaps adding a link to this update, in your DD forum thread would be encouraging for others who stumble into that forum. I'm glad he's now calm enough to look deeper into some of the things going on with him. Sounds as if backing off the testosterone really helped!

Whatever the reasons for sticking this out, he's really fortunate to have you. Cognitive impairments or not, he'll probably not ever realise how close he's come to being left to his delusions.