Hello Thompson
Welcome to TP
I shouted at Mum sometimes and felt awful after
Its stress
as well as the trauma of seeing what this vile disease does to the ones we care for, its so hard to see someone you care about, as I call it,growing downwards.
You like I did with my mum are fighting in your own way to stop your husband forgetting how to do things etc, so you dont lose anymore of your husband than you already have, (I am not explaining myself very well, but I hope you understand)
try to forgive yourself , you not only need to be patient with your husband but also with yourself, no one is perfect we all make mistakes and lose our cool , hopefully in coming here you will find strategies that will help you
I hope you are getting some support/help
Personally I found Compassionate communication, that Izzy has provided a link for, very helpful for ME as well as Mum, I didnt lose my cool with Mum nearly as much as I used to, but its not easy to follow ,say, when your asked the same question for the 50th time that day and you know their is more to come
I hope you are getting enough help