Excema itching picking and hot showers I need help to stop

Hi my name is brandon and I have been blaming my skin problems on excema since I was 12 and now I am 22. 10 years of itching and picking my skin until it would bleed or turn raw and I now am reaching out for help to all of you now that I am am not by myself and not going it alone. I remember being 12 in middle school and after my pe class my feet would be all sweaty and it would itch so bad and I would rub the top of my feet till there was no top layer left and my sock would turn nasty from puss and blood. Then the cycle started of waiting for the layer to heal to the point of creating one big flake of skin that I would peel off and make it clear again because in my head I couldnt have the flake being there. For several years it continued to be just on my feet and I would do anything to itch and pick them eventhough at the same time my parents were doing everything to try to figure my skin condition out. I felt so bad because all the time and money my parents wasted on trying to figure out why I itched was pointless because I really couldn't stop no matter what I tried. I went to a dermatologist that was well know in eczema and she sent me to a light therapy treatment center again that made no progress because I couldn't stop the itching and picking cycle. On top of all of this I found hot water in the shower made my skin temporarily would make it feel better and almost orgasmic the hotter it would go till I couldn't take anymore. Now ten years later i have itched and picked my legs back and arms and feet without control and it effects every part of my life and I need help. Thankyou for reading