Doubtful clinical pictures could be comprehensively investigated by screening for peripheral polyarthralgias (i.e., hands/feet X-rays, HLA-B27 testing, erythrocyte sedimentation rate, and rheumatoid factor, and C-reactive protein dosage) [150], chronic fatigue syndrome panel screening [151], serum creatine kinase and lactate dehydrogenase dosage, and electroneurography/electromyography. Here, CRP is linked to myalgic encephalomeyelitis/chronic fatigue syndrome.