The natural response of the mind is often to shut-down vague recollections of some past event that you don't remember fondly but there lies the problem...we shut it down consciously, yet the body continues to harbour the irritation or pain, at the subconscious level, which then has no choice but to manifest as imbalance or some other symptom, that feeling of perpetuation in the body (on and on and on in perpetuity = "chronic") and, of course, where one "off-kilter" energy tends to linger, other sticky energies will attract, leading to escalation (the "snowball" effect).