What causes Basilar migraine ?
What causes a basilar migraine? The exact underlying cause of basilar migraines is not well understood. Basilar migraines, like all types of migraines, are likely complex disorders that are influenced by multiple genes in combination with lifestyle and environmental factors. Scientists also suspect that nerve abnormalities and/or altered blood flow to certain parts of the brain (brainstem and occipital lobes, specifically) may also play a role in the development of basilar migraines. The susceptibility to basilar migraines may rarely be caused by a change (mutation) in the ATP1A2 gene or CACNA1A gene. In these cases, episodes of basilar migraines may occur in more than one family member.