The body weights of rats in the reserpine + IL-6-R-Ab group increased after the IL-6-R-Ab administration compared with those in the reserpine group (*** p < 0.001 vs. control, ### p < 0.001 vs. reserpine), suggesting that the IL-6-R-Ab-treated fibromyalgia rats did not experience chronic pain (Figure 2D). Here, IL6R is linked to fibromyalgia.