How does the neuro disorder association define chronic migraine?

Chronic migraine is defined as having at least 15 headache days a month, with at least 8 days of having headaches with migraine features, for more than 3 months.

Explanation:

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i'd say because of its name. i haven't looked at it, though. so, sorry if that's lol

realistic fiction depicts life and society in a true to life  manner.

its main characters are dynamic.

they grow and transform with their experiences, making it easier for readers to  relate to them.

this genre primarily focuses on the  daily struggles  of ordinary people, validating their experiences.

hope that ! : )