Such a good little wife, repeated the patronising potentate, again patting my hand with an air of understanding all about it, really an excellent little wife. View in context These potentates had two principal anxieties: the one, that no foreigner should enter Italy under arms; the other, that none of themselves should seize more territory.
One leading theory for the cause of migraines is âcortical spreading depression.â This wave of brain activity that sweeps over the brain, can be seen on an MRI and is blamed for migraine aura and other migraine symptoms. Others believe hyperactivity in the brain stem causes migraines. Because migraines are difficult to control, many people with this disorder often take medication regularly. Overuse of medication can also lead to migraines.
Exactly what causes ocular migraine is not known, but a personal or family history of migraines is a known risk factor. Doctors theorize that ocular migraine has the same causes as classic migraine. If you've never experienced an ocular migraine before, make an appointment to see your doctor.