What Is a Migraine?
Migraine is a type of headache that is often localized in a certain area of the head and is sometimes accompanied by a pronounced sensitivity to light and sound. Other common migraine symptoms include nausea and vomiting. Migraines are usually gradual in onset, progressively more painful and then undergo a gradual resolution. When migraines are mild to moderate, they are usually described as being dull, deep and steady. When severe, migraines are throbbing or pulsating.
Some migraines are worsened by head motion, sneezing, straining or physical exertion. Since many patients also become sensitive to light and sound, some migraine sufferers will lie down in a darkened and quiet room to relieve symptoms.
More common in women than in men, migraine is a chronic condition, and migraine headaches may occur infrequently or as often as several times a week. Although migraines can begin at any time, the most common time is in the early morning. While migraines can begin during sleep, this is uncommon and must be evaluated to rule out other conditions.
The onset of migraine usually occurs between the ages of 5 and 35. It is treatable but not curable, and it is not considered a life-threatening condition, though rarely a severe migraine may cause a stroke. However, if the headaches are severe and frequent, migraine can have a debilitating impact on a persons life.
What Are the Symptoms and Types of Migraine?
Depending on the symptoms, most migraine headaches are categorized as migraine with aura (previously called classic migraine) or migraine without aura (previously called common migraine).
Migraine with aura begins with certain neurologic symptoms, the most common of which are visual disturbances. The typical visual aura presents as a flickering jagged (or zigzag) line, usually at the side of the visual field. The next symptom in frequency is numbness and tingling of the lips, lower face and fingers of one hand. Some patients experience temporary paralysis on one side of the body. Auras rarely last longer than an hour and are followed by a headache 93 percent of the time.
Migraine without aura has been called common migraine because it has a greater incidence in the population (accounting for 80 percent of cases) and is not preceded by an aura. It may be preceded by mood changes, fatigue, mental fuzziness and fluid retention. In common migraine, the patient also may have diarrhea, increased urination, nausea and vomiting. The common migraine can persist three or four days, depending on treatment.
Either type of migraine may also be accompanied by nasal congestion, runny nose, tearing, and/or sinus pain or pressure. This has sometimes led to the mistaken diagnosis of sinus headache. True sinus headache is typically associated with an acute sinus infection, and symptoms often also include fever and thick mucous discharge.
Are There Different Forms of Migraine?
Besides the categories of migraine with or without aura, migraines also occur in other forms, such as:
How Do Other Types of Headaches Differ from Migraine?
Although other types of headaches share some symptoms with migraines, they also come with distinctive symptoms of their own. Other common headache types include:
Tension headache: Chronic headache that is associated with stress or fatigue; physical ailments such as arthritis; or psychological distress or depression. Tension headaches may be precipitated by poor posture, eyestrain, abnormalities of muscles or bones in the neck, misaligned teeth or jawbones, or unusual noise or light conditions.
A pattern of chronic tension headaches may set in between the ages of 20 and 40; women have a greater incidence of tension headache than men. Symptoms include muscle tightness in the head and neck, especially in the temple and forehead areas; pressure sometimes described as feeling like a band or vise around the head; and continuous but not throbbing pain.
Cluster headache: A type of vascular headache that sometimes occurs in a cluster of up to four separate attacks a day and has been associated with an increased level of histamine in the blood. Cluster headaches, which usually come on quite suddenly on one side of the head, are thought be the most severe and intense headaches. Patients describe excruciating, stabbing pain, often around one eye, as well as tearing from that eye and a runny nose on the affected side. These headaches can last less than an hour or for several hours or more, and they often stop as quickly as they started. The onset of cluster headaches is usually between the ages of 20 and 45 and may be linked to smoking and alcohol use; more men than women suffer from cluster headache.
What Are the Risk Factors for Migraine?
The propensity to get migraine headaches may be genetic. Research is underway to identify the genes involved in migraine headaches that run in families. Essentially, if members of your immediate family (mother, father and siblings) suffer from migraine, you are at risk too.
Migraine headaches may be precipitated by a variety of factors called triggers:
Do Other Medical Conditions Increase Your Migraine Risk?
Though many people who have migraines also have co-existing health issues, it has not been established that having other conditions causes migraines. Nor has it been established that having migraines leads to other medical problems.
Two conditions found to exist in a high proportion of people who have migraines are depression and anxiety, though the reason for this is unclear. Doctors have also observed that in people who have cardiovascular disease, there is a slightly increased incidence of migraine. Also, many people who have conditions with nasal and sinus inflammation appear to have migraines as well.
Certain medical events may also put a person at risk for migraine, among them are trauma to the brain from head or neck injury, and infections or hemorrhages in the brain. In addition, certain medications can begin a headache pattern that can become migraine-like in nature.
How Is Migraine Diagnosed?
Migraine can generally be diagnosed from its clear-cut symptoms, which usually fall into a recognizable pattern. A patient with suspected migraine will be asked how often the headaches occur, where the pain is localized, how long the headaches last and related questions. The physician also will take a full medical history, including information about any past head injury, eye strain, sinus condition, and dental or jaw problems.
The physician may order exams and blood work to exclude other possible causes for the headache pain. It is usually not necessary to do X-ray or other scans of the brain. This would be recommended in certain situations such as unexplained onset at a later age, an unexplained finding on neurologic exam or features that are atypical for migraine. Patients with sudden onset of extremely severe headache must be immediately scanned to rule out the possibility of an aneurysm. Other signals for scanning are rapidly increasing frequency of headache or persistent headache unresponsive to treatment.
What Medications Are Used to Treat Migraine?
Migraine drugs fall generally into two categories. Those for acute migraine headaches are considered abortive treatments because they interrupt an attack or episode of migraine headache and are given once the symptoms of a migraine have appeared. The second category is preventive medications, which are taken regularly to keep headaches from occurring.
Abortive medications:
Preventive medications:
The daily preventive medications prescribed for migraine headache include:
Are There Non-Drug Treatments for Migraine?
Doctors recommend behavioral measures both to prevent and treat migraines: one is to stay away from avoidable triggers, such as alcohol or certain foods.
Behavioral treatments can also help prevent stress-related migraine. These treatments include:
Where Can I Find More Information About Migraines?
You can find information and support for living well with migraines at Everyday Health and from non-profit organizations such as those listed here:
Source: http://www.everydayhealth.com
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