IL17A and myalgic encephalomeyelitis/chronic fatigue syndrome: FM patients also had significantly lower plasma levels compared to controls for IL-10 and IL-17A (p ​< ​.001), but the FM group was not different from CFS patients (p ​= ​.220; and p ​= ​.339, respectively) and CFS patients did not show any differences compared to controls (p ​< ​.05).