Full-body complex regional pain syndrome (CRPS) may be the result of more than one disease. If CRPS starts in one limb, for example, and then spreads to involve another limb or even all four limbs, this will impact all of the trunk muscles. While this is not necessarily CRPS, the muscle pain may produce what people call “full body” CRPS. Treatment of this involves gradually sorting out muscle groups individually until all of the muscle pain is under control. This requires months of treatment and requires physical therapy, occupational therapy and behavioral medicine all working together.