Cranial Autonomic Symptoms of Migraine in Japan: Prospective Study of 373 Migraine Patients at a Tertiary Headache Center.

CAS in patients with migraine is common not only in Caucasians but also in Asians. Central sensitization seems to contribute more than peripheral sensitization to CAS manifestation, and osmophobia might be noteworthy among Asian patients with migraine. To avoid a misdiagnosis, we emphasize the need for comments on CAS in the international classification of headache disorders migraine criteria.