More factors need to be taken into account to explain what migraines are. Different points of views exist on migraine definitions. I want to mention a few from the internet and from medical doctors. My personal point of view is very different and derived from Ancient Egyptian know-how.
Migraine is a neurological syndrome characterized by altered bodily perceptions, severe headaches, and nausea. Physiologically, the migraine headache is a neurological condition more common to women than to men. The word migraine was borrowed from Old French migraigne (originally as “megrim”, but respelled in 1777 on a contemporary French model). The French term derived from a vulgar pronunciation of the Late Latin word hemicrania, itself based on Greek hemikrania, from Greek roots for “half” and “skull”.
The typical migraine headache is unilateral (affecting one half of the head) and pulsating, lasting from 4 to 72 hours; symptoms include nausea, vomiting, photophobia (increased sensitivity to light), and phonophobia (increased sensitivity to sound). Approximately one-third of people who suffer migraine headache perceive an aura—unusual visual, olfactory, or other sensory experiences that are a sign that the migraine will soon occur.
Initial treatment is with analgesics for the headache, an antiemetic for the nausea, and the avoidance of triggering conditions. The cause of migraine headache is unknown; the most common theory is a disorder of the serotonergic control system. For this reason pain killers are used.
Migraines are the worst type of headaches. A sick feeling or a blurring of vision or flashing lights in front of the eyes can usually precede this headache. A migraine will usually begin with a fierce, throbbing pain on one side of the head. This pain may spread and is often accompanied by nausea and vomiting. A migraine can last for hours or days. Migraines are caused by the dilation and contraction of the blood vessels on one side of the brain.
4 Migraine Definitions
Migraine – A particular form of recurrent headache that often runs in families. According to the International Headache Society, migraine headache pain must have four of the following characteristics: one-sided, pulsating or throbbing, at least moderate if not severe, and worsened by ordinary daily activities such as climbing stairs or housework.
Migraine Equivalents – Symptoms such as unexplained flashing lights or visual disturbances, transient numbness, unexplained bouts of abdominal pain or nausea, etc., all of which are considered to be fragments of a full-blown migraine attack.
MIGRAINE DEFINITIONS WITH AURA (CLASSIC MIGRAINE) – suffers who experience this headache will have a past history of an acute headache followed by a neurological symptom, like visual disturbance. An aura does not always precede every migraine attack. Older patients sometimes note that their headaches have disappeared, but that they still have aura symptoms.
MIGRAINE DEFINITIONS WITHOUT AURA (COMMON MIGRAINE) – sufferers with common migraine have never experienced the neurological warning signs of an aura. They may be able to predict an imminent headache by vague premonitory signs like fatigue or bursts of energy, increased or decreased appetite or anxiety. Some studies suggest 80% of migraine sufferers have a migraine without aura.