Maybe you have a "old" injury that continues to bother you long after it should have healed? That is sequelae, a condition that stays with you after a previous disease or injury.
In the 2015 study below, researchers conclude that stress modulates the perception of pain, which results in either stress-induced pain or hyper sensitivity to pain. The state of our mind dictates the way we perceive our bodies overall status.
The impression of 'stress' for the individual is subjective, so a situation that may be stressful to one person will have no effect on another. We absolutely have control over our reaction to the events in our lives, and we should make good use of it to manage our pain, and direct the quality of our mental state.
After trying every conventional therapy for crippling, chronic low-back pain, I discovered the problem was completely within my control. I experienced an amazing transformation in a matter of weeks. I have been pain-free for the past few years, and you can be too!