Chapter 13 — Lymphatic and Immune SystemCHR
chronic fatigue syndrome (CFS)/KRŎN-ĭk fă-TĒG SĬN-drōm/
pathologycomplex chronic disorder marked by severe fatigue unrelieved by rest, worsened by mental or physical activity
complex chronic disorder marked by severe fatigue unrelieved by rest, worsened by mental or physical activity