what is migraine?
Migraine is probably the headaches (headaches) that produces more visits to the doctor's office. It usually appears available as repeated episodes of varying intensity. The presentation is generally:
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Hemicraneal (ie, this is perceived only inside the head part)
Pulsatile (intermittent matches heartbeat)
Paroxysmal (abruptly, although a lot of patients report certain premonitory symptoms).
However, in some cases it could take several hours until the pain completely set. Therefore, the establishment of migraine is quite various and vary from anyone to an alternative, both in enough time it takes to show up, as well as the presence or shortage of symptoms and signs that warn from the arrival from the pain.
A migraine can be disabling, inducing the person to complete day to day activities or work usually performed normally. In spite of this, the migraine is normally not associated with other major diseases, though there are diseases that can induce headaches.
Is so frequent that about 15% of the population is affected with recurrent manner, and roughly 95% of people suffer no less than one episode of migraine during its life. It affects more women than men in a ratio of about 4-1, in fact it is proven that you have a genetic predisposition to suffer migraine type.
A critical attack of migraine can last from four to 3 days. Your physician ask with this information which is a crucial criterion for diagnosis. Headaches that lasts for some hours or a couple of days, will truly be primary (ie, true "no more", since it is not motivated by another problem, the sort of headache that is certainly). However, a headache that can last for days or perhaps weeks, you can tell the doctor that there's more problems which is resulting in the headache (what is called secondary headache). If that's the case, treatment will get rid of the problem arising headache.
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Reasons for migraine
It is hard to describe the method in which migraine occurs, simply given it is not at all clear. Currently accepted theory neurovascular. Based on this theory of migraine is triggered with a mechanism involving neural structures of the brain, which eventually activating the vascular system with the meninges, ultimately to blame for pain.
It can be belief that the migraine trigger can be a stimulus against which anybody is hypersensitive migraine, probably due to a genetic predisposition. This stimulation can activate different structures in the nerves, such that the predominant activation in some of these areas is correlated using the clinical options that come with migraine.
The activation of your region referred to as hypothalamus could produce the prodrome (previous sensations of discomfort) which might be received with a amount of migraineurs hours or days prior to start migraine.
Activation of the cerebral cortex, specially in occipital part, be linked to the existence of migraine aura, which is a phenomenon, usually visual source, seems some hours or minutes prior to the attack.
Finally, the activation of nuclei which might be within the brainstem trigger the activation of sensory fibers, especially called trigeminal nerve. This nerve innervates the bloodstream of the meninges along with their activation causes vasodilation and inflam