Will,
I don't know if it's psychological or some kind of a brain damage, but I'm going through exactly the same thing. And I wasn't even screaming
My cat is sick. I love her to death and this is the extremely stressful situation for me. The stress made my depression even worse. I think very slow (not that I was thinking like a normal person before). I can't concentrate on anything. Sometimes I hear people, but I don't get what they are saying. I have to re-ask the same question 3-4 times. This is very frustrating. I'm so scared that I'm gonna stay like this.
I had an unfortunate incident today at our vet office. The receptionist treated me like I was some kind of a stupid person, who can't understand simple word. I broke into tears in front of her and stormed out. This is creepy. I just really hope this will go away, otherwise, I'm so screwed.
Will, I hope I'm worse than you are. That will give you hope that there is this 35years old woman in Seattle, who is way worse than you are. That should be a cheering thought