relationship between pain and sex, my theories and experience

When experiencing physical pain it seems the brain is always looking for a hormonal fix to the situation. In my experience the go to emotional response to pain seems to be anger. I did notice that while I am angry nothing hurts which I can only attribute to the adrenaline rush from being upset. Sometimes this tends to be too much of the potent drug too quickly causing major anxiety and panic episodes which i assume can only be an overdose. However the effects of the adrenaline wear off quickly as soon as the fight is over. The result seems to be both an immense sadness and a return of the pain sometimes even stronger pain that I had to begin with. This seems to be some type of withdrawal symptom from the adrenaline itself. My brain then seems to go after yet another fix causing me acute sexual stimulation I can only assume is solely for the oxytocin which not only erases the adrenaline withdrawal but is also produces the endorphins that are responsible for a massive release of dopamine which is a highly effective and longer lasting pain killer than the adrenaline. The only downside seeming to be either increased fatigue or a boost of mental energy. I've also found that the pain itself can boost this production leading to an even more pleasurable experience when additional pain is introduced. I'm going to go out on a limb and say the old science was correct in the case of "hysteria" and the treatment of this with orgasm. I am wondering if one can actually cure themselves of chronic pain, anxiety, and even anger issues just with sex or masterbation alone. I am entirely sure this is not an original theory but it is one I just came to myself and felt the need to save it lest I forget.