CGRP: calcitonin gene-related peptide, CRCP: CGRP receptor component, F: female, I: intractable, IHC: immunohistochemistry, M: male, NA: non-available, NK-1R: neurokinin-1 receptor, SP: substance P, T: tolerable

* The levels of IgG antibody were measured in IU/ml as the manufacturer’s protocol, while those of IgE antibody were measured in O.D. values.