“…10,22,63,71,79,112 Conversely, spontaneous pain (without specific eliciting stimuli) and evoked pain (ie, in response to standing, weight-bearing, movement, touch, or other stimuli) associated with CIBP are difficult to treat from the onset because of their intermittent nature, which tends to be very rapid in onset, intense, and of short duration. 10,22,63,71,79,112 Terminology commonly used in the clinical setting to describe evoked or spontaneous pain include breakthrough pain, incident pain, or a pain flare; however, definitions for these terms often lack precision and may overlap. For example, breakthrough pain is defined as a transitory flare of pain in the setting of chronic pain managed with opioid drugs, 127 yet the evoked pain seen in CIBP can occur during weight-bearing without current opioid use.…”