Chronic Pain is a physical condition of the body. That is experienced by the soul/life atom and being able to understand the same in knowledge of Coexistence.
The pain and suffering is real and the reaction to that can be modified by understanding and knowing the reason for the same.
Knowing holistically the structure of the body its purpose use and the chronic illness all are possible and can easily be understood known and chaos will disappear.
It is easier said than done and the beauty of coexistence is that the resilience and the capacity to bear the pain always comes before the pain.
Try talking with or interacting with more people and you will find amazing titbits of knowledge first hand knowledge of people who underwent pain.