Migraine is a type of chronic headache that can cause considerable pain for hours or even days. A patient with severe symptoms may want to rest in a dark, quiet place. In some people migraine headache may be preceded or accompanied by sensory warning symptoms or signs called auras. Common auras include flashes of light, blind spots or tingling in your arm or leg. Although medications to cure migraine is not available, prescription drugs can reduce the frequency and severity of migraines.
[Read: What makes the Head Hurt?]
The exact cause of migraine is not known, but genetics and environmental factors seem to play a role. Migraines may be caused by alteration of neuro-chemicals in the trigeminal nerve, and imbalances in brain chemicals, specifically serotonin. Serotonin levels probably decrease during migraines that may trigger your trigeminal system to release a neuropeptide, which reaches your brain's outer covering (meninges) to cause headache.
Some common triggers of migraine include;
Migraines can begin in childhood, adolescence or early adulthood. A person with migraine may have some or all of these signs and symptoms:
An untreated migraine headache can persist for 4 to 72 hours. The frequency of migraine headaches varies from person to person; some may have migraines several times a month, whereas others can have less often.
In most people migraines are not associated with auras (originally called common migraines), where as some people may have migraines with auras (classic migraines).The common auras include changes to your vision, such as seeing flashes of light, and feeling pins and needles in an arm or leg.
[Read: Ayurvedic Remedies for Migrane]
Your doctor will take a comprehensive history to make a diagnosis of migraine headache. Your doctor will ask questions regarding how the headache starts, learn about the quality, quantity, and duration of the pain, and any associated symptoms like nausea, vomiting, or light sensitivity. If your symptoms are typical, your doctor will likely diagnose the condition on the basis of your medical history and a physical exam. Physical and neurological examination is normal in migraine. In case your headaches are unusual, severe or sudden, or you have abnormality on physical examination your doctor may recommend the following tests to rule out other possible causes for your pain like tumors, strokes, infection, aneurysms, neurological diseases and other brain abnormalities
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