Hello:
I am a LBD patient. Your comment “ Does your husband sometimes perceive a question as a criticism?” made me want to chime in.
I definitely have that behavior. Seems like many things feel confrontational - then I react. Not the yelling but very unpleasant to be around sometimes.
I also really dont like to be told that how I am doing something could be better.
I’m not the person I was and things I used to be ale to do arent as easy or even possible anymore. So when I am doing something - I’m actually happy that I am able to do it - at least give it a good try.
In my mind - I am being told - you dont know what you’r doing. Take it very personally. Just wish someone could see I am trying and let me do it my way - as long as I’m not causing harm. It might take longer and even not be logical - but I’m trying and will most likely get to an outcome that is close to what I wanted.
Sometimes I feel like I know there is a better way to do something after my lovely wife and caregiver mentions. I have to try and defend my way - like you are describing.

Not sure if any of that might help from a perspective of someone that is seeing it from “in here”.

I’m going to start a new discussion dealing specifically with communication challenges in the next few days.

Hope that might help to have caregivers exchange ideas and have some input from LBD patients for a different perspective. I”t will help us patients to understand the challenges from your side and then when we can see both sides - everyone will benefit.

Peace
Larry H