A Study of Lasmiditan (LY573144) Treatment in Children Aged 6 to 17 With Migraine

Inclusion Criteria: * Participants must have a history of migraine with or without aura as defined by International Headache Society International Classification of Headache Disorders, 3rd edition (ICHD-3) (ICHD-3 2018) diagnostic criteria 1.1 or 1.2.1 and meets the following criteria: * History of migraine attacks for more than 6 months * Reports at least 2 and no more than 8 moderate-to-severe migraine attacks per month in the 2 months prior to screening visit * Duration of a typical untreated migraine attack (excluding sleep) is greater than or equal to 3 hours * Participant has not, by history, experienced satisfactory response with a previous migraine therapy, in the opinion of the investigator * Participant must be able to swallow a tablet * For participants taking migraine preventive medication, treatment regimen is stable and has been taken for at least 3 months prior to screening * Participants must weigh at least 15 kilograms (kg) Exclusion Criteria: * Participants must not be pregnant or nursing * Participants must not have any acute, serious, or unstable medical condition * Participants must not be actively suicidal or at significant risk for suicide, in the opinion of the investigator