How Pain Medications May Reinforce Nervous System Sensitivity Several commonly used pain medications influence nervous system signaling in ways that may unintentionally reinforce pain over time: Opioids can increase pain sensitivity through opioid-induced hyperalgesia Corticosteroids alter stress-hormone signaling and sleep architecture NSAIDs may impair tissue repair, prolonging nociceptive input Acetaminophen reduces antioxidant capacity needed for neuronal resilience When combined with chronic stress, poor sleep, nutrient depletion, or unresolved inflammation, the nervous system may lose its ability to turn pain off. When Pain Becomes a Conditioned Neurologic Response Over time, pain can become conditioned linked not only to tissue injury, but also to: Movement patterns Emotional stress Previous flare experiences Sleep disruption At this stage, pain is maintained by neural patterning rather than active structural damage

However, other places, such as the thighs, hips, stomach, or arms, can also be used
Tateno et al
doi:10.1086/652861
Additionally, mitigated leaky gut syndrome suggests that BPC 157 is a stabilizer of cellular junctions by increasing tight junction protein ZO-1 expression and transepithelial resistance (Park et al., 2020)
have raised hopes for possible reclassification, although no changes have occurred yet