CRP and migraine disorder: Representative search strings included: "metabolic inflammation" OR "meta-inflammation" AND "chronic pain", "neuroinflammation" AND "glial activation" AND "hyperalgesia", "systemic inflammation" AND ("migraine", "chronic low back pain", OR "widespread pain"), "cytokines" OR "chemokines" AND "central sensitization", "diet" OR "dietary interventions" OR "Mediterranean diet" AND "inflammation" AND "chronic pain", "microbiome" OR "short-chain fatty acids" AND "pain", and "sleep deprivation" OR "sleep disturbance" AND "CRP" OR "interleukin-6".