IL17A and migraine disorder: When serum IL-17A level was >7.99 pg/mL (0–20.60 pg/mL), the sensitivity and specificity in migraine diagnosis were 88.6 and 60.6% respectively, and when serum IL-17A level was >20.60 pg/mL, the sensitivity and specificity were only 25.35 and 93.18%, respectively.