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Migraine
A migraine is usually an intense pounding headache that can last for hours or even days. The pounding or pulsing pain usually begins in the forehead, the side of the head, or around the eyes. The headache gradually gets worse. Just about any movement, activity, bright light, or loud noise seems to make it hurt more. Nausea and vomiting are common during a migraine.
Migraines may happen only once or twice a year, or as often as daily. Women are more likely to have migraines than men.
There are different types of migraine headaches. The most common types of migraines are classic migraines and common migraines.
Classic migraines (also called complicated migraines) start with a warning sign called an aura. These types of migraines are sometimes also called “migraines with aura.” The aura often involves changes in the way you see. You may see flashing lights, colors, a pattern of lines, or shadows. You may temporarily lose some of your vision, such as your side vision.
You may also feel a strange prickly or burning sensation, or have muscle weakness on one side of your body. You may have trouble in communicating. You may also feel depressed, irritable, and restless.
Auras last about 15 to 30 minutes. Auras may occur before or after your head pain. Sometimes the pain and aura overlap, or the pain never occurs. The head pain of classic migraines may occur on one side of your head or on both sides.
Common migraines don’t start with an aura. For this reason, these types of migraines are also called “migraines without aura.” Common migraines may start more slowly than classic migraines, last longer, and interfere more with daily activities. The pain of common migraines may be on only one side of your head. Most people who have migraines have common migraines (they don’t have an aura).
Migraines without head pain, sometimes called “silent migraines,” may cause you to feel other migraine symptoms, but not pain. At least not the usual migraine pain around your eyes and temples. This type of migraine may even include an aura phase. You may also feel the same sensitivity to light and sound as with a typical migraine.
Hemiplegic migraines cause one side of your body to become weak, similar to having a stroke. These symptoms are only temporary. They are a part of the migraine attack. Areas of the body affected by the weakness may include your face, arm, or leg. The weakness may last from an hour to even days. It most often goes away within 24 hours. For this type of migraine, the head pain can come before or after the weakness. This type of migraine is rare.
Retinal migraines (also called ocular migraines) cause changes in vision that are not related to aura vision changes. For retinal migraines, symptoms involve diminished vision or even blindness in one eye. These symptoms do not last long. They can occur before or after head pain. If you experience this type of migraine, it is important to contact your doctor.
Causes
The exact cause is unknown. It appears that migraine headaches may be caused in part by changes in the level of a body chemical called serotonin. Serotonin plays many roles in the body, and it can have an effect on the blood vessels. When serotonin levels are high, blood vessels constrict (shrink). When serotonin levels fall, the blood vessels dilate (swell). This swelling can cause pain or other problems. Another aspect that is being studied is that migraine headaches go along with a spreading pattern of electrical activity in the brain.
Some research suggests there could be a heredity factor for migraines, meaning they may run in families. Researchers have identified some genes associated with migraines. They are unsure, though, why these genes seem to impact some people more than others. The American Migraine Foundation reports that if one of your parents has migraines, there is a 50% chance that you will, too. If both of your parents have migraines, your chances jump up to 75%. Ultimately, migraines seem to be caused by a combination of factors: genetic, environmental, and lifestyle.
Women are more likely to have chronic migraines (migraines that occur 15 days a month or more). This is likely linked to hormones. Hormones fluctuate each month around the time of your period. They can also fluctuate if you are pregnant or going through menopause.
What does a migraine feel like?
The pain of a migraine headache can be intense. It can get in the way of your daily activities. Migraines aren’t the same for all people. Possible symptoms of migraines are listed below. You may have a “premonition” several hours to a day before your headache starts. Premonitions are feelings you get that can signal a migraine is coming. These feelings can include intense energy, fatigue, food cravings, thirst, and mood changes.
Symptoms of migraines
Possible symptoms of migraines include:
- Intense throbbing or dull aching pain on one side of your head or both sides.
- Pain that worsens with physical activity.
- Nausea or vomiting.
- Changes in how you see, including blurred vision or blind spots.
- Being bothered by light, noise, or odors.
- Feeling tired and/or confused.
- Stopped-up nose.
- Feeling cold or sweaty.
- Stiff or tender neck.
- Lightheadedness.
- Tender scalp.
What are some migraine risk factors and triggers?
Some things make you more likely to get migraine headaches (these are called “risk factors”). Other things may bring on a migraine (these are called “triggers”).
Common migraine risk factors include the following:
- Family history:You are much more likely to have migraines if one or both of your parents had migraines.
- Sex:Women are more likely than men to have migraines.
- Age:Most people have their first migraine during adolescence, but migraines can start at any age, usually before age 40.
Common migraine triggers include the following:
- Food and drink:Certain food and drink (see list below) may cause migraines. Dehydration and dieting or skipping meals may also trigger migraines.
- Hormone changes: Women may experience migraines related to their menstrual cycles, to menopause, or to using hormonal birth control or hormone replacement therapy.
- Stress:Stress may trigger migraines. Stress includes feeling overwhelmed at home or work, but your body can also be stressed if you exercise too much or don’t get enough sleep.
- Senses:Loud sounds, bright lights (such as flashing lights or sunlight), or strong smells (such as paint fumes or some perfumes) may trigger migraines.
- Medicines:Certain medicines may trigger migraines. If you think your migraines might be related to your medicine, talk to your doctor. Your doctor may be able to prescribe a different medicine.
- Illness:Infections, such as the cold or the flu, may trigger migraines, especially in children.
Foods that may trigger migraines:
- aged, canned, cured, or processed meat (including bologna, game, ham, herring, hot dogs, pepperoni, and sausage)
- aged cheese
- alcoholic beverages (especially red wine)
- aspartame
- avocados
- beans (including pole, broad, lima, Italian, navy, pinto, and garbanzo)
- brewer’s yeast (including fresh yeast coffee cake, donuts, and sourdough bread)
- caffeine (in excess)
- canned soup or bouillon cubes
- chocolate, cocoa, and carob
- cultured dairy products (such as buttermilk and sour cream)
- figs
- lentils
- meat tenderizer
- monosodium glutamate (MSG)
- nuts and peanut butter
- onions (except small amounts for flavoring)
- papaya
- passion fruit
- pea pods
- pickled, preserved or marinated foods (such as olives and pickles, and some snack foods)
- raisins
- red plums
- sauerkraut
- seasoned salt
- snow peas
- soy sauce
How are migraines diagnosed?
To make the diagnosis of migraine, your doctor will conduct a thorough medical history. In addition, they’ll ask you to:
- Describe your headache symptoms.
- Describe the type and location of your pain.
- Tell how often you get migraine headaches.
- Talk about the activities or the situations that may have brought on the migraine.
- Discuss what medications you take to relieve the pain and how often you take them.
- Tell how you felt before, during and after the headache.
Your doctor may also order blood tests and imaging tests (such as a CT scan or MRI) to make sure there are no other causes for your headache. An electroencephalogram (EEG) may be ordered to rule out seizures.
What can I do to prevent migraines?
While there are no sure ways to keep from having migraine headaches, here are some things that may help:
Eat regularly and do not skip meals.
- Keep a regular sleep schedule.
Exercise regularly. Aerobic exercise can help reduce tension as well as keep your weight in check. Obesity can contribute to migraines.