When investigating GWI and CFS in females, Smylie et al. [17] found that interleukin 10 (IL-10) delineated GWI or CFS subjects in females in the context of the interleukin 23 (IL-23)/interleukin 17 (IL-17) axes. Here, IL37 is linked to myalgic encephalomeyelitis/chronic fatigue syndrome.