Human brain has go receptors for each and every stimulus. But, it is now taken as a psychological fact that our brain has got “NO PAIN RECEPTORS”.
It is only taken as a perception. The part of forebrain “THALAMUS” is a suspected to percept the pain. And yet apart from all these science talks and actual brain researches, we not only sense the pain but it is a very definite feeling also.
Pains are of many types like broken body part, a disease or a broken heart-well, frankly, if you have a pain due to some sort of heat breakage then definitely you are most miserable and to add in your misery “THERE IS NO PAIN KILLER FOR THAT”. So, basically, the pain killers used are doing what in our body?
They probably got indulge with blood circulatory system, releases stress relining hormones; and thus touch the hypothalamus or maybe simply, they are for telling our body that “O DEAR YOU HAVE GOT NO RECEPTORS FOR PAIN; SO PLEASE STOP PERCEPTION”.
The diseases characterized with harsh pain include, slip disc and cancer and of course others. The patient of slip disc are not given only pain killers because they got on resisted to it but also they are injected with narcotics for relief.
If you are using any pain killers then you are doing more harm than good to your own self. To add fun in the writing must confess I am used to pain killers.