There are 2 widely accepted types of migraine: with aura and without aura. Migraine with aura is considered to be more dangerous than without aura. People who suffer from migraine with aura, often see flashing lights, blind spots, or jagged lines in their visual field prior to the migraine attack. They also have an increased risk of stroke and cardiovascular disease. The reasons why it is so, are not fully understood. A recent study suggests that blood clot factors could potentially be a cause for migraine with aura.
The study examined 12 coagulation measures and found 4 factors that were specific to migraine with aura. 3 of them were genetically increased levels of blood clotting factors (coagulation factor VIII, von Willebrand factor, and phosphorylated fibrinopeptide A) and the 4th one was a genetically decreased level of fibrinogen (a protein important in the late stages of the blood clotting process).
Interestingly, there was no relation found between the same 4 factors and migraine without aura. This means that blood clotting factors are specific for migraine with aura and may explain why people who suffer from migraine with aura, have more chances of stroke or any other cardiovascular disease.
Curious? HERE is the source