LONDON, England, Oct. 8 -- Cephalalgia, a peer-reviewed journal that says it features all aspects of headache from the International Headache Society, published research articles on the following topics in its October 2021 edition:

Original Articles:

* Efficacy of erenumab in chronic migraine patients with and without ictal allodynia

* E-diary use in clinical headache practice: A prospective observational study

* Severe abrupt (thunderclap) no . . .

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