- Migraine afflicts approximately 29.5 million Americans
- This figure may be higher, as half the population do not seek medical attention
- Studies have reported that half of the migraine sufferers seeking medical assistance are misdiagnosed
- WHO estimated in 2003 that there were 303 million migraine sufferers in the world and rated migraines as the 19th most common cause of years lived with disability (YLDs)
- Women are three times more likely to have a migraine than men
- Peak prevalence age is 20 to 45 years, but can be commonly experienced between ages of 15 and 55
- Neurologists are more likely to suffer from a migraine than the general population, and 57% of neurologists will experience a migraine in their lifetime
- 70% to 80% of migraineurs have a hereditary influence
- Caucasians and lower income groups have a higher incidence of migraine
- Two main migraine cause theories have been identified:
- Circulatory/vascular theory and
- Neurological/nerve theory
- Migraine causal substances and syndromes being investigated include vasoactive amine, serotonin, magnesium, reduced cerebral blood flow, and circadian patterns
- 85% of migraineurs can identify a trigger factor, with half of sufferers identifying either weather, stress, alcohol, menses or crying as the main trigger
- Only 15-20% of migraineurs experience auras; it is a misconception that migraines always cause visual disturbances
- Migraine pain can last between 4 to 72 hours
- 60% of migraines are unilateral, with 15% of migraineurs always experiencing the pain on the same side
- The average number of recurring migraines per month is 3-4
- The main symptoms experienced by migraineurs are pulsing or throbbing pain (85%), nausea (80%), and sensitivity to light or noise (80%)
- Migraines are usually classified as either classic (with aura) or common (without aura)
- Types of migraines include:
- Abdominal
- Acephalgic
- Basilar artery
- Cyclic
- Dysphrenic
- Hemiplegic
- Menstrual
- Nocturnal
- Ocular
- Ophthalmoplegic
- Retinal
- Status
- Transformed
- Screening and diagnosis tools for complicated types of migraine include:
- Migraine treatments fall into three main categories:
- Pain-relieving medications – 98% of migraineurs take medication for temporary relief
- Preventive medications – only 1 in 5 migraineurs use preventative therapy (American Migraine Prevalence and Prevention (AMPP) Study)
- Cognitive and behavioral treatments
- The economic burden of migraine has been estimated at more than $31 billion
- Almost one quarter of migraineurs have missed one day of work per quarter due to their migraine, while nearly half were prevented from doing daily household chores
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Last Updated on Tuesday, 17 November 2009 16:26 |