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PostSubject: Migraine   Migraine EmptyTue Dec 28, 2010 6:44 pm


Migraines are chronic headaches that can cause significant pain for hours or even days. Symptoms can be so severe that all you can think about is finding a dark, quiet place to lie down.


Some migraines are preceded or accompanied by sensory warning symptoms or signs (auras), such as flashes of light, blind spots or tingling in your arm or leg. A migraine is often accompanied by nausea, vomiting, and extreme sensitivity to light and sound.


Although there's no cure, medications can help reduce the frequency and severity of migraines. If treatment hasn't worked for you in the past, it's worth talking to your doctor about trying a different migraine medication. The right medicines combined with self-help remedies and lifestyle changes may make a tremendous difference.


Symptoms
Migraines usually begin in childhood, adolescence or early adulthood. A typical migraine attack produces some or all of these signs and symptoms:


Moderate to severe pain, which may be confined to one side of the head or may affect both sides
Head pain with a pulsating or throbbing quality
Pain that worsens with physical activity
Pain that interferes with your regular activities
Nausea with or without vomiting
Sensitivity to light and sound
When untreated, a migraine typically lasts from four to 72 hours, but the frequency with which headaches occur varies from person to person. You may have migraines several times a month or much less frequently.


Not all migraines are the same. Most people experience migraines without auras, which were previously called common migraines. Some people have migraines with auras, which were previously called classic migraines. Auras can include changes to your vision, such as seeing flashes of light, and feeling pins and needles in an arm or leg.


Whether or not you have auras, you may have one or more sensations of premonition (prodrome) several hours or a day or so before your headache actually strikes, including:


Feelings of elation or intense energy
Cravings for sweets
Thirst
Drowsiness
Irritability or depression
When to see a doctor
Migraines are often undiagnosed and untreated. If you experience signs and symptoms of migraine, keep a record of your attacks and how you treated them. Then make an appointment with your doctor to discuss your headaches and decide on a treatment plan.


Even if you have a history of headaches, see your doctor if the pattern changes or your headaches suddenly feel different.


See your doctor immediately or go to the emergency room if you have any of the following signs and symptoms, which may indicate other, more serious medical problems:


An abrupt, severe headache like a thunderclap
Headache with fever, stiff neck, rash, mental confusion, seizures, double vision, weakness, numbness or trouble speaking
Headache after a head injury, especially if the headache gets worse
A chronic headache that is worse after coughing, exertion, straining or a sudden movement
New headache pain if you're older than 50


Causes
Although much about the cause of migraines isn't understood, genetics and environmental factors seem to both play a role.


Migraines may be caused by changes in the trigeminal nerve, a major pain pathway. Imbalances in brain chemicals, including serotonin — which helps regulate pain in your nervous system — also may be involved.


Serotonin levels drop during migraines. This may trigger your trigeminal system to release substances called neuropeptides, which travel to your brain's outer covering (meninges). The result is headache pain.


Migraine triggers
Whatever the exact mechanism of the headaches, a number of things may trigger them. Common migraine triggers include:


Hormonal changes in women. Fluctuations in estrogen seem to trigger headaches in many women with known migraines. Women with a history of migraines often report headaches immediately before or during their periods, when they have a major drop in estrogen. Others have an increased tendency to develop migraines during pregnancy or menopause. Hormonal medications — such as oral contraceptives and hormone replacement therapy — also may worsen migraines, though some women find it's beneficial to take them.
Foods. Some migraines appear to be triggered by certain foods. Common offenders include alcohol, especially beer and red wine; aged cheeses; chocolate; aspartame; overuse of caffeine; monosodium glutamate — a key ingredient in some Asian foods; salty foods; and processed foods. Skipping meals or fasting also can trigger migraines.
Stress. Stress at work or home can instigate migraines.
Sensory stimuli. Bright lights and sun glare can produce migraines, as can loud sounds. Unusual smells — including pleasant scents, such as perfume, and unpleasant odors, such as paint thinner and secondhand smoke, can also trigger migraines.
Changes in wake-sleep pattern. Either missing sleep or getting too much sleep may serve as a trigger for migraine attacks in some individuals, as can jet lag.
Physical factors. Intense physical exertion, including sexual activity, may provoke migraines.
Changes in the environment. A change of weather or barometric pressure can prompt a migraine.
Medications. Certain medications can aggravate migraines.


Risk factors
Several factors make you more prone to having migraines.


Having a family history. Many people with migraines have a family history of migraine. If one or both of your parents have migraines, there's a good chance you will too.
Being younger than 40. Half the people who suffer from migraines started getting them before they were 20 and migraines are most common in people who are between 30 and 39 years old.
Being female. Women are three times as likely to have migraines as men are. Headaches tend to affect boys more than girls during childhood, but by the time of puberty, more girls are affected.
Experiencing hormonal changes. If you're a woman with migraines, you may find that your headaches begin just before or shortly after onset of menstruation. They may also change during pregnancy or menopause. Some women report that their migraines got worse during the first trimester of a pregnancy. Though for many, the migraines improved during later stages in the pregnancy.


Complications
Sometimes your efforts to control your pain cause problems.


Abdominal problems. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen (Advil, Motrin, others) and aspirin, may cause abdominal pain, bleeding and ulcers — especially if taken in large doses or for a long period of time.
Rebound headaches. In addition, if you take over-the-counter or prescription headache medications more than nine days per month or in high doses, you may be setting yourself up for a serious complication known as rebound headaches. Rebound headaches occur when medications not only stop relieving pain, but actually begin to cause headaches. You then use more pain medication, which traps you in a vicious cycle.
Serotonin syndrome. This potentially life-threatening drug interaction can occur if you take migraine medicines called triptans, such as sumatriptan (Imitrex) or zolmitriptan (Zomig), along with antidepressants known as selective serotonin reuptake inhibitors (SSRIs) or serotonin and norepinephrine reuptake inhibitors (SNRIs). Some common SSRIs include Zoloft, Prozac and Paxil. SNRIs include Cymbalta and Effexor. Fortunately, serotonin syndrome is rare.


Preparing for your appointment
You're likely to start by seeing your primary care provider first. If appropriate you may be referred to a neurologist or other physician who specializes in headache medicine.


Because appointments can be brief, and because there's often a lot of ground to cover, it's a good idea to be well-prepared for your appointment. Here's some information to help you get ready for your appointment, and what to expect from your doctor.


What you can do


Write down symptoms you're experiencing, even if they seem unrelated to your migraines.
Write down key personal information, including any major stresses or recent life changes.
Make a list of all medications, as well as any vitamins or supplements, that you're taking. It is particularly important to list all medications that you have used to treat your headaches. Include the doses of the medications.
Take a family member or friend along, if possible. Sometimes it can be difficult to soak up all the information provided to you during an appointment. Someone who accompanies you may remember something that you missed or forgot.
Write down questions to ask your doctor.
Your time with your doctor is limited, so preparing a list of questions will help you make the most of your time together. List your questions from most important to least important in case time runs out. For migraines, some basic questions to ask your doctor include:


What is likely triggering my migraines?
Are there other possible causes for my symptoms?
What kinds of tests do I need?
Is my condition likely temporary or chronic?
What is the best course of action?
What are the alternatives to the primary approach that you're suggesting?
What changes to my lifestyle or diet do you suggest I make?
I have these other health conditions. How can I best manage them together?
Is there a generic alternative to the medicine you're prescribing me?
Are there any brochures or other printed material that I can take home with me? What Web sites do you recommend?
In addition to the questions that you've prepared to ask your doctor, don't hesitate to ask questions during your appointment at any time that you don't understand something.


What to expect from your doctor
Your doctor is likely to ask you a number of questions. Being ready to answer them may reserve time to go over any points you want to spend more time on. Your doctor may ask:


When did you first begin experiencing symptoms?
Have your symptoms been continuous or occasional?
How severe are your symptoms?
What, if anything, seems to improve your symptoms?
What, if anything, appears to worsen your symptoms?
What you can do in the meantime


Keep a headache diary. A diary can help you and your doctor determine what triggers your migraines. Note when your headaches start, how long they last and what, if anything, provides relief. Be sure to record your response to any headache medications you take. Also note the foods you ate in the 24 hours preceding attacks, any unusual stress, and how you feel and what you're doing when headaches strike.
Reduce stress. Because stress triggers migraines for many people, try to avoid overly stressful situations, or use stress-reduction techniques like meditation.
Get enough sleep but don't oversleep. Aim for six to eight hours of sleep a night.


Tests and diagnosis
If you have typical migraines or a family history of migraines, your doctor will likely diagnose the condition on the basis of your medical history and a physical exam. But if your headaches are unusual, severe or sudden, your doctor may recommend a variety of tests to rule out other possible causes for your pain.


Computerized tomography (CT). This imaging procedure uses a series of computer-directed X-rays that provides a cross-sectional view of your brain. This helps doctors diagnose tumors, infections and other possible medical problems that may be causing your headaches.
Magnetic resonance imaging (MRI). MRIs use radio waves and a powerful magnet to produce very detailed cross-sectional views of your brain. MRI scans help doctors diagnose tumors, strokes, aneurysms, neurological diseases and other brain abnormalities. An MRI can also be used to examine the blood vessels that supply the brain.
Spinal tap (lumbar puncture). If your doctor suspects an underlying condition, such as meningitis — an inflammation of the membranes (meninges) and cerebrospinal fluid surrounding your brain and spinal cord — he or she may recommend a spinal tap (lumbar puncture). In this procedure, a thin needle is inserted between two vertebrae in your lower back to extract a sample of cerebrospinal fluid (CSF) for laboratory analysis.


Treatments and drugs
A variety of drugs have been specifically designed to treat migraines. In addition, some drugs commonly used to treat other conditions also may help relieve or prevent migraines. Medications used to combat migraines fall into two broad categories:


Pain-relieving medications. Also known as acute or abortive treatment, these types of drugs are taken during migraine attacks and are designed to stop symptoms that have already begun.
Preventive medications. These types of drugs are taken regularly, often on a daily basis, to reduce the severity or frequency of migraines.
Choosing a strategy to manage your migraines depends on the frequency and severity of your headaches, the degree of disability your headaches cause, and your other medical conditions.


Some medications aren't recommended if you're pregnant or breast-feeding. Some aren't used for children. Your doctor can help find the right medication for you.


Pain-relieving medications
For best results, take pain-relieving drugs as soon as you experience signs or symptoms of a migraine. It may help if you rest or sleep in a dark room after taking them:


Nonsteroidal anti-inflammatory drugs (NSAIDs). These medications, such as ibuprofen (Advil, Motrin, others) or aspirin, may help relieve mild migraines. Drugs marketed specifically for migraine, such as the combination of acetaminophen, aspirin and caffeine (Excedrin Migraine), also may ease moderate migraines but aren't effective alone for severe migraines. If taken too often or for long periods of time, NSAIDs can lead to ulcers, gastrointestinal bleeding and rebound headaches.
Triptans. For many people with severe migraine attacks, triptans are the drug of choice. They are effective in relieving the pain, nausea and sensitivity to light and sound that are associated with migraines. Medications include sumatriptan (Imitrex), rizatriptan (Maxalt), naratriptan (Amerge), zolmitriptan (Zomig), almotriptan (Axert), frovatriptan (Frova) and eletriptan (Relpax). Side effects of triptans include nausea, dizziness and muscle weakness. They aren't recommended for people at risk for strokes and heart attacks. A new, single-tablet combination of sumatriptan and naproxen sodium (Treximet) became available in 2008. It's more effective in relieving migraine symptoms than either medication on its own.
Ergot. Ergotamine (Migergot, Cafergot) is much less expensive, but also less effective, than triptans. It seems most effective in those whose pain lasts for more than 48 hours. Dihydroergotamine (Migranal) is an ergot derivative that is more effective and has fewer side effects than ergotamine.
Anti-nausea medications. Because migraine attacks are often accompanied by nausea with or without vomiting, medication for nausea is appropriate and is usually combined with other medications. Frequently prescribed medications are metoclopramide (oral) or prochlorperazine (oral or suppository).
Butalbital combinations. Medications that combine the sedative butalbital with aspirin or acetaminophen (Butapap, Phrenlin Forte) are sometimes used to treat migraine attacks. Some combinations also include caffeine or codeine (Esgic-Plus, Fioricet). These medications, however, have a high risk of rebound headaches and withdrawal symptoms so should be used infrequently.
Opiates. Medications containing narcotics, particularly codeine, are sometimes used to treat migraine pain when people can't take triptans or ergot. Narcotics are habit-forming and are usually used only as a last resort.
Preventive medications
Nearly half of those who get migraines could benefit from preventative medication, yet only about 1 in 10 people take it. You may be a candidate for preventive therapy if you have two or more debilitating attacks a month, if pain-relieving medications aren't helping, or if your migraine signs and symptoms include a prolonged aura or numbness and weakness.


Preventive medications can reduce the frequency, severity and length of migraines and may increase the effectiveness of symptom-relieving medicines used during migraine attacks. Your doctor may recommend that you take preventive medications daily, or only when a predictable trigger, such as menstruation, is approaching.


In most cases, preventive medications don't eliminate headaches completely, and some cause serious side effects. If you have had good results from preventative medicine and have been migraine-free for six months to a year, your doctor may recommend tapering off the medication to see if your migraines return without it.


For best results, take these medications as your doctor recommends:


Cardiovascular drugs. Beta blockers — commonly used to treat high blood pressure and coronary artery disease — can reduce the frequency and severity of migraines. These drugs are considered among first-line treatment agents. Calcium channel blockers, another class of cardiovascular drugs, especially verapamil (Calan, Isoptin), also may be helpful in preventing migraines and relieving symptoms from aura. In addition, the antihypertensive medications lisinopril (Prinivil, Zestril) and candesartan (Atacand) are useful in reducing the length and severity of migraines. Researchers don't understand exactly why all of these cardiovascular drugs prevent migraines. Side effects can include dizziness, drowsiness or lightheadedness.
Antidepressants. Certain antidepressants are good at helping to prevent some types of headaches, including migraines. Most effective are tricyclic antidepressants, such as amitriptyline, nortriptyline (Pamelor) and protriptyline (Vivactil). These medications are considered among first-line treatment agents and may reduce migraines by affecting the level of serotonin and other brain chemicals. You don't have to have depression to benefit from these drugs. Other classes of antidepressants called selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs), haven't been proven as effective for migraine prevention. However, preliminary research suggests that one SNRI, venlafaxine (Effexor), may be helpful in preventing migraines.
Anti-seizure drugs. Some anti-seizure drugs, such as divalproex (Depakote) and topiramate (Topamax), and gabapentin (Neurontin), seem to reduce the frequency of migraines. In high doses, however, these anti-seizure drugs may cause side effects, such as nausea and vomiting, diarrhea, cramps, hair loss, and dizziness.
Cyproheptadine. This antihistamine specifically affects serotonin activity. Doctors sometimes give it to children as a preventive measure.
Botulinum toxin type A (Botox). Botulinum toxin type A is sometimes used for treatment of chronic migraines. Studies have had mixed results with respect to effectiveness. However, some headache specialists believe that it can be helpful for some people. Injections are made in muscles of the forehead and neck. When this is effective, the treatment typically needs to be repeated every three months.


Lifestyle and home remedies
Self-care measures can help ease the pain of a migraine.


Try muscle relaxation exercises. Progressive muscle relaxation, meditation and yoga don't require any equipment. You can learn them in classes or at home using books or tapes. Or spend at least a half-hour each day doing something you find relaxing — listening to music, gardening, taking a hot bath or reading.
Get enough sleep but don't oversleep. The average adult needs six to eight hours of sleep a night. It's best to go to bed and wake up at regular times, as well.
Rest and relax. If possible, rest in a dark, quiet room when you feel a headache coming on. Place an ice pack wrapped in a cloth on the back of your neck and apply gentle pressure to painful areas on your scalp.
Keep a headache diary. Continue keeping your headache diary even after you see your doctor. It will help you learn more about what triggers your migraines and what treatment is most effective..
Alternative medicine
Nontraditional therapies may be helpful if you have chronic headache pain:


Acupuncture. In this treatment, a practitioner inserts many thin, disposable needles into several areas of your skin at defined points. A number of clinical trials have found that acupuncture may be helpful for headache pain.
Biofeedback. Biofeedback appears to be especially effective in relieving migraine pain. This relaxation technique uses special equipment to teach you how to monitor and control certain physical responses related to stress, such as muscle tension.
Massage. Massage may help reduce the frequency of migraines. And it can improve the quality of your sleep, which can, in turn, help prevent migraines.
Herbs, vitamins and minerals. There is some evidence that the herbs feverfew and butterbur may prevent migraines or reduce their severity. A high dose of riboflavin (vitamin B-2) also may prevent migraines by correcting tiny deficiencies in the brain cells. Coenzyme Q10 supplements may be helpful in some individuals. Oral magnesium sulfate supplements may reduce the frequency of headaches in some people, although studies don't all agree on this issue. Magnesium taken intravenously seems to help some people during an acute headache, particularly people with magnesium deficiencies. Ask your doctor if these treatments are right for you. Don't use feverfew or butterbur if you're pregnant.




Prevention
Whether or not you take preventive medications, you may benefit from lifestyle changes that can help reduce the number and severity of migraines. One or more of these suggestions may be helpful for you:


Avoid triggers. If certain foods seem to have triggered your headaches in the past, avoid those foods. If certain scents are a problem, try to avoid them. In general, establish a daily routine with regular sleep patterns and regular meals. In addition, try to control stress.
Exercise regularly. Regular aerobic exercise reduces tension and can help prevent migraines. If your doctor agrees, choose any aerobic exercise you enjoy, including walking, swimming and cycling. Warm up slowly, however, because sudden, intense exercise can cause headaches. Obesity is also thought to be a factor in migraines, and regular exercise can help you keep your weight down.
Reduce the effects of estrogen. If you're a woman with migraines and estrogen seems to trigger or make your headaches worse, you may want to avoid or reduce the amount of medications you take that contain estrogen. These medications include birth control pills and hormone replacement therapy. Talk with your doctor about the best alternatives or dosages for you.
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