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Migraine Headaches without Aura

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Your head pounds, you can't focus and the only thing you can do is crawl under the sheets until it all subsides. If this sounds familiar, chances are you get migraines.

Migraines are headaches that are more frequent and intense than everyday headaches. The word migraine, derived from the Greek hemikrania, which means "half of the head," refers to a throbbing pain in one side of the head that's often accompanied by a stiff and tender neck, extreme sensitivity to light and noise, difficulty concentrating, nausea and increased pain during routine physical activity. These symptoms typically last about four hours but can last as long as three days. And after the initial symptoms subside, people often feel physically exhausted and mentally foggy.

Migraines generally fall into two categories: classic and common. Most people who get migraines experience the common type, but about 20% experience classic migraines that involve common migraine symptoms accompanied by an aura, which is a visual disturbance that manifests as blurry vision, blind spots, zigzag lines or tunnel vision (a loss of peripheral vision). If you get migraines but don't recognize these symptoms, you probably get common migraines.

The first experience of a common migraine typically occurs early in life. Twenty-five percent of people who get migraines have their first one before age 10, more than 55% have it before age 20 and more than 90% have it before age 40.

Gender and genetics seem to play a role in who experiences the condition. Women are three times more likely to have migraines, and about 90% of people who get them have a family history of the condition, according to the American Council for Headache Education.

If people have a predisposition to migraines, certain triggers can cause them. These include emotional stress, physical exertion, changes in the weather, environmental pollutants, certain medications, foods such as dairy products, red wine and chocolate and changes in sleep patterns.

Researchers don't know why these things trigger migraines, nor what physical processes cause the condition. Studies are currently focusing on the role of blood flow in the brain and head, hormonal changes in the central nervous system and electrical imbalances in cells.

Researchers do know, however, that when something triggers a migraine the ensuing symptoms can be debilitating, reducing people's quality of life and affecting their relationships and job productivity.

But there is help. Studies show that proper care can effectively reduce the frequency and intensity of migraines.

When you first visit your healthcare practitioner with the condition, he or she will take a detailed history and may perform a physical and neurological examination to determine what factors are contributing to your condition. Following this, adequate care can begin.


Anatomy

Just about anything can trigger migraines, from foods to changes in the weather. But while researchers have identified common triggers, they're still not sure why they cause migraines.

They do know, however, that while many head structures are sensitive to pain, the brain isn't one of them. So they know that migraine pain must occur elsewhere, possibly in the attaching structures at the base of the brain, such as the muscles and ligaments, the tissues covering the brain and the spine, called the meninges, or the muscles and blood vessels around the scalp, face and neck.

There are two main theories to explain what would cause this pain. The first is the vascular theory. The term vascular refers to body parts that carry blood. The vascular theory holds that the opening and closing of blood vessels in the head, scalp and neck accounts for migraine headaches. Some researchers believe this action irritates pain receptors surrounding these blood vessels.

The second theory is the chemical theory. It holds that abnormal amounts of chemicals in and around the brain cause painful reactions. Some researchers believe this is due to such things as blood vessel inflammation. Others believe that a lack of serotonin, an important neurotransmitter that helps inhibit pain and regulate mood, can cause migraines. When the brain releases less serotonin, triggers that normally don't cause pain are able to.

While theories such as these are promising, they don't address why some people are affected by migraines and others are not. Research continues, but current studies indicate that chiropractic care combined with learning about and avoiding potential triggers can vastly reduce the frequency and intensity of people's migraines.


Chiropractic Care

A migraine headache may go away without appropriate care, but without it another will usually strike within days or weeks. Fortunately, chiropractic care is effective for migraines, and by seeing your chiropractor regularly you can reduce their frequency and severity.

Several studies indicate that spinal manipulative therapy (SMT), also known as chiropractic adjustment, is particularly effective. Adjustments involve quick, strategic thrusts to stuck or misaligned joints. To perform adjustments, chiropractors either use their hands or a tool called an activator. By performing an adjustment to the appropriate joints, your chiropractor can help alter the pain sensitivity of your nervous system and reduce the discomfort your migraines cause. Adjustments also relax tight muscles in the neck, which can increase blood flow to the head and reduce the blood vessel constriction that some researchers think contributes to migraines.

To further reduce muscle tightness, your chiropractor may use a technique called trigger point therapy, which involves targeting and loosening pain-inducing contracted muscle fibers called knots or trigger points. To loosen trigger points, chiropractors apply pressure with their fingers, thumbs, knuckles or elbows for about 10 seconds. This separates the contracted fibers and allows blood to rush in and wash out painful irritating chemicals such as lactic acid.

Your chiropractor may also perform a technique called muscular release. To compensate for strained or weakened muscles, the body lays down new tissue to ensure muscle function. But this new tissue is scar tissue, and it may not have the same properties as the original muscle tissue. Over time, this can hinder the muscle's performance, resulting in pain and dysfunction. To improve muscle performance, your chiropractor can perform muscular release. This involves using his or her hands to slide along the muscle's surface, removing scar tissue and allowing new muscle tissue to take its place.

To reduce the pain associated with migraines, your chiropractor may use electrical therapies such as transcutaneous electrical nerve stimulation (TENS). TENS machines work by sending mild electrical impulses through the skin into nerve fibers below, which causes the body to produce endorphins, its natural painkillers. By targeting the impulses at painful areas, your chiropractor can stimulate the release of endorphins to interrupt the flow of pain signals from the affected tissues to the brain.

For patients with severe migraine pain, some chiropractors may need to make a medical referral. For patients with infrequent but severe migraines, a medical doctor may recommend a pain-relieving drug, such as Tylenol. For patients with more frequent migraines, a medical doctor may recommend an abortive or prophylactic medication. Abortive medications promote the release of serotonin, a chemical in the brain that promotes good feelings and decreases sensitivity to pain. Prophylactic medications work as antidepressants and also help to lower blood pressure.

Finally, your chiropractor will probably recommend ways for you to care for yourself. For starters, he or she will probably recommend that you keep a headache diary and record events that precede your migraines, paying particularly close attention to what you eat because many foods trigger migraines.

Becoming more active and participating in aerobic, relaxation and stretching exercises can also help you relieve tension and relax tight muscles that can contribute to the onset of migraine headaches. Aerobic exercise improves circulation and causes the body to release endorphins, stretching exercises loosen tight muscles that can contribute to headaches and relaxation exercises reduce the stress and tension that can lead to tight muscles.

If you don't get help, migraine headaches can be unrelenting. But by adopting lifestyle changes, learning about what causes migraines and getting regular chiropractic care you can help reduce their frequency and intensity.

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