Most people consider any bad headache a "migraine", but most headaches are not migraines. Scientific studies show that 60% of all migraine sufferers have not been properly diagnosed and are being ineffectively treated for migraines when they should be treated for some other problem that also causes headaches. Migraines, which in years past used to affect 5-10% of the general population, now affect 15-30% mostly women beginning in the third and forth decades of life. Between 1980- 1990 the prevalence of headache disorders increased by 60%, but over 90% of all people who suffer from headaches have never seen a specialist
Migraine may begin with visual symptoms (spots, flickering light, zigzag lines, etc.), then nausea with a dull, throbbing pain and lasts from 4-72 hours. This is called "classical migraine. If it occurs without the visual symptoms it is called a "common" migraine. This type has moderate to severe pulsating pain together with nausea and sensitivity to light and noise. It has a 75% rate among women largely due to their hormonal connection to estrogen. Physical activity makes a real migraine worse.