Table 3.

Comparison of serum levels of TRPV1 (ng/ml), VIP (ng/l), and PACAP (ng/ml) according to the studied groups [data are shown as median (interquartile range)].

	Control (n = 30)	Chronic migraine (n = 36)	Episodic migraine (n = 23)	p -value
TRPV1 (ng/mL)	1.61 (1.83)#	2.91 (2.72)#	1.84 (1.93)	0.034
VIP (ng/L)	284.50 (90.40)#	286.44 (46.83)	303.24 (50.38)#	0.027
PACAP (ng/mL)	2.57 (.64)#	2.72 (1.06)	2.73 (0.46)#	0.043

^#show statistically significant differences between groups.