CALCA and migraine disorder: For instance, increased CGRP levels have been linked to migraine (Villalon and Olesen, 2009), and migraine can often by accompanied by vertigo, dizziness, nausea, and sometimes by abnormal caloric or vestibular-evoked myogenic potentials (Szirmai, 1997; Furman and Marcus, 2012; Furman et al., 2013; Lempert et al., 2013; Furman and Balaban, 2015).