Hi
@Pityaker, particularly difficult at this time but there are care agencies still working, can you get someone to come in and give you a break, even a couple of hours a week is such a help, it is essential that we have a break sometimes. It's no wonder you are feeling suicidal being a carer 24/7/365 is too much for anyone. Try to remind yourself that this is not going to be forever, the lockdown will end and your wife's situation will eventually change, one way or another, maybe you'll eventually place her in a care home.
My partner is stage 6 of the 7 stages of dementia, it's become extremely difficult but I've found after repeatedly trying that I have finally found an understanding and helpful GP who is going to put us on the list for when the memory nurse is back to normal working pattern (although it seems like you may be on their radar if your wife has a specialist team). Also I've found support for carers via the council, social services. Support seems to be hit and miss depending on where you live but, try googling something like 'carers assessment' and your county and see what comes up.
It helps enormously just to have someone listen to you and to be able to talk about the problems you are facing.
Re the hysteria, is it possible to distract her, soothing music, food maybe. My partner has angry outbursts and swearing, I just have to try and remain calm and offer him ice cream (his favourite) or put his music on. Sleep is so important in our ability to deal with this. I try to give him a walk every day, keeping him active and not letting him sleep too much in the daytime so he sleeps better at night. I started reading a book called 'Contented Dementia', I don't think the Alzheimer's Society is keen on it but it has a few useful ideas.
But all our PWDs are different so it's just trying to find something that works for them to keep them calm.
I hope your day has been better.