Dutchman, as you know I am just a month ahead of you in adapting to OH being in a care home. I read on your thread many people saying that it is normal to feel really bad at this time, but for me it has not been too bad - upsetting YES, but devastating NO.
However I do relate to what you are experiencing. When my beloved, wonderful Father (the last of that generation to go) died unexpectedly and a month later I was made redundant at work, I plunged into the depths, into a very dark place indeed. Spending too much time 'home alone' with my thoughts and suffering many physical symptoms. I had the pins and needles in my limbs just as you describe, terrible recurring migraines, shortness of breath, rapid heart beat. I thought I was going to die and to be honest, I did not care if I did. Anything, even suicide would have been preferable to the way I felt.
However my daughters and husband ordered me to the GP who referred me to a psychologist, who diagnosed acute depression. I had some counselling and medication, forced myself to attend college to get a batch of certificates for the sake of my CV and eventually got another job and returned to 'normal' although I am and will be on antiDs for the rest of my life.
Dutchman, if you are still with me, I am trying to say that your extreme reaction to this life changing event is not "normal" or par for the course. You are ILL, you are having what used to be called a nervous breakdown. Because it is an illness, it can be treated but you cannot do it yourself - you need medical help. You do need to work at it yourself too - setting yourself targets of things you must do, baby steps first and bigger challenges later. If you cannot countenance doing it for yourself remember that your Daughter, having more or less lost her mother, needs YOU, her Dad and your wife still needs your support, someone looking out for her best interests. You have proved that you are a strong and caring man, tending to your loved one's needs for so long but now it is time for YOU to seek the medical help and support which you deserve.