A Study to Assess an Auto-injector Being Used to Treat a Migraine Attack

The purpose of this research study is to evaluate an investigational auto-injector system for delivering sumatriptan under the skin for a single migraine attack. The study could take approximately 5 weeks and will include about 3 office visits to the study doctor, the patient will be contacted every 2 weeks until the patient experiences a migraine and uses the auto-injector. The last visit will be done by a telephone follow-up call.

Investigational Plan: 1. Screening Visit \[Visit 0 / 0-14 days prior to receipt of study drug\] 2. Baseline Visit \[Visit 1 / Provision of study drug and subject training\] 3. Treatment Visit \[Visit 2 / within 72 hours after study drug administration\] 4. Follow-up Visit \[Visit 3 / Telephone follow-up 7-10 days after study drug administration\]