Why do I feel cured of depression/anxiety and concentration issues for about an hour after laser tattoo removal? (photos)

I have been getting laser tattoo removal treatments since 2014. After every treatment, my depression, anxiety and concentration issues disappear for about an hour. It's a temporary miracle, I have had depression for 18 years now. I found a study from Canada that links inflammation to depression. Could a dr tell me in detail what occurs in the body that could possibly be the reason for why I feel cured of depression/anxiety and concentration issues for about an hour after laser tattoo removal?