Figure 3.

Sum8 and comparison between CFS and GWI subjects based on migraine status. (A) Sum of 8 scores which total the 8 ancillary criteria from the CFS severity score. (B) CFS and GWI subjects were combined to show that migraineurs (n = 64) had higher ratings of headache severity (2.9 [2.7–3.2]) compared to CFS and GWI subjects with no migraines (2.1 [1.6–2.5]; n = 25) and controls (0.88 [0.51–1.3]; n = 45). (C) CFS and GWI subjects with migraines had lower systemic pain thresholds (2.8 [2.4–3.2]) compared to those with no migraines (4.2 [3.4–5.1]) and controls (5.5 [1.6–2.5]). (D) CFS and GWI migraineurs had lower sinus pain thresholds (1.1 [0.9–1.3]) compared to CFS and GWI with no migraines (1.6 [1.3–1.9]) and controls (2.2 [1.8–2.6]). ^*P ≤ 0.05; ANOVA followed by Tukey's HSD test; error bars depict the mean [±95% CI]. ^**P ≤ 0.001.