IRVINE, Calif. — Allergan Inc. has teamed up with the National Headache Foundation and HealthyWomen to launch "Rewrite Your Day," a campaign to educate people about chronic migraine.

Allergan said Wednesday that as part of the initiative, 15 people with chronic migraine will win a recreation of a special moment lost to their condition — representing the 15 or more headache days per month experienced by people living with chronic migraine.

Mindy Weiss, a nationally recognized event planner to the Hollywood elite, will lend her decades of celebrity event planning experience to the recreation of 15 special moments, such as weddings, anniversaries and birthday parties.

The cornerstone of the campaign is an online resource, www.RewriteYourDay.com, where people with chronic migraine (and those who think they may have it) can take a quiz to determine if their symptoms indicate they may have the condition, as well as find a headache specialist who can help them and learn more about the condition and ways they can manage it.

To enter the contest, people can visit the website and share their stories of special moments missed because of chronic migraine and how they would rewrite those days if given the chance. Fifteen winners will be selected by Weiss and an independent panel of health advocates. She will recreate the events between October 2011 and December 2012.

"I’ve spent my life helping people celebrate their most important milestones. Whether it’s seeing a bride walk down the aisle or watching a couple mark their 25th wedding anniversary, it brings me incredible joy to witness these memories being made," Weiss said in a statement. "It’s devastating to me that people with chronic migraine live half the month or more with headache pain and often miss once-in-a-lifetime moments with their loved ones as a result. That’s why I am honored to help these individuals recreate these lost moments and shed light on this devastating condition."

Allergan reported that chronic migraine is a neurological condition affecting about 3.2 million Americans and, according to a poll of 520 chronic migraine patients, is undiagnosed in approximately 80% of those who meet the clinical definition of the condition. People living with chronic migraine have a diagnosis of migraine and experience headaches on 15 or more days per month, with headache lasting four hours a day or longer.

"Without proper diagnosis and treatment, people with chronic migraine live interrupted lives plagued by both headaches and worry about when the next headache will strike," stated Seymour Diamond, M.D., director emeritus and founder of the Diamond Headache Clinic and executive chair of the National Headache Foundation. "As a result, many patients report feeling isolated by the condition and robbed of time with family and friends."

The National Headache Foundation is a leading patient authority on headache disorders, and HealthyWomen is one of the nation’s leading health information resources for women.