What to watch with CRP Entzündung and fatigue?

CRP (C-reactive protein) is a well-established but non-specific marker of inflammation. When elevated alongside persistent fatigue, it may indicate systemic inflammation—from chronic infections, autoimmune conditions, or metabolic stress. Fatigue itself is a common symptom driven by cytokines like IL-6, part of the senescence-associated secretory phenotype (SASP). However, CRP alone cannot pinpoint the cause of fatigue. No standard genetic test directly links CRP to fatigue. Evidence linking senescence markers (p16, IL-6) to fatigue remains mechanistic and not clinically validated. A sensible approach includes repeated CRP measurements, complete blood count, ferritin, thyroid panel, and autoimmune serology. Lifestyle factors—poor sleep, inactivity, diet—can raise CRP and worsen fatigue. Caution: a single elevated CRP may result from transient issues (minor infection, vaccination). Evidence grade: human-moderate for CRP as a marker; mechanistic for fatigue-SASP link.