Showing posts with label aura. Show all posts
Showing posts with label aura. Show all posts

Tuesday, August 12, 2014

Common treatments for migraines

This article provides information on migraine headaches and discusses treatments for migraine headaches.

Suffering from migraines can have a seriously negative impact on both your work and social life, but what exactly causes those splitting headaches?

Men, women and children can suffer from migraines. Some people may have a migraine as often as a few times a week, whereas others might only experience them occasionally.
According to the NHS, there are several types of migraine. These include:
  • Migraine with aura – where there are warning signs before the migraine begins, such as seeing flashing lights.
  • Migraine without aura – where the migraine occurs without warning signs.
  • Migraine aura without headache, also known as silent migraine – where an aura or other migraine symptoms are experienced, but a headache does not develop.
Although the exact cause of migraine is unknown, triggers are thought to include hormonal, emotional, physical, dietary, environmental and medical changes to your usual routine.
If you suffer from regular migraines it is important to visit your GP, as some experts have found migraines to indicate other underlying health issues such as abnormal blood vessel structure in the brain.
Migraine remains undiagnosed and under-treated in at least 50% of patients, and less than 50% of migraine patients consult a physician – but your GP could really help you to reduce your suffering.
GPs can help you to identify the triggers of your migraine and also prescribe medication to help you manage your condition like painkillers, triptans (medications that can help reverse the changes in the brain that may cause migraines), or anti-emetics (medications often used to reduce nausea and vomiting).
Read more here

Sunday, September 01, 2013

Brain structure may be changed by migraines

A recent study shows that migraine headaches may permanently change the brain's structure.

Migraine may have long-lasting effects on the brain's structure, according to a study published in the August 28, 2013, online issue ofNeurology®, the medical journal of the American Academy of Neurology.
"Traditionally, migraine has been considered a benign disorder without long-term consequences for the brain," said study author Messoud Ashina, MD, PhD, with the University of Copenhagen in Denmark. "Our review and meta-analysis study suggests that the disorder may permanently alter brain structure in multiple ways."
The study found that migraine raised the risk of brain lesions, white matter abnormalities and altered brain volume compared to people without the disorder. The association was even stronger in those with migraine with aura.
For the meta-analysis, researchers reviewed six population-based studies and 13 clinic-based studies to see whether people who experienced migraine or migraine with aura had an increased risk of brain lesions, silent abnormalities or brain volume changes on MRI brain scans compared to those without the conditions.
The results showed that migraine with aura increased the risk of white matter brain lesions by 68 percent and migraine with no aura increased the risk by 34 percent, compared to those without migraine. The risk for infarct-like abnormalities increased by 44 percent for those with migraine with aura compared to those without aura. Brain volume changes were more common in people with migraine and migraine with aura than those with no migraines.
"Migraine affects about 10 to 15 percent of the general population and can cause a substantial personal, occupational and social burden," said Ashina. "We hope that through more study, we can clarify the association of brain structure changes to attack frequency and length of the disease. We also want to find out how these lesions may influence brain function."
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Thursday, August 22, 2013

Understanding migraine headaches

This article discusses what migraine headaches are, what we should know about them, and how to alleviate them.

Just about everybody gets a headache now and then, but migraines can feel like a world apart from what we think of as garden-variety, everyday headaches. At their worst, they bring nausea and vomiting, obscured vision and pulsating pain, leaving their victim unable to do much other than wait it out.
But the effects of migraines can span hours or even days, and with more than 37 million Americans experiencing migraine headaches, that’s a lot of time devoted to misery. Migraines can occur in anyone at any age, but are three times more common in women than men.
What causes migraines is not fully understood, but they stem from an inherited neurological disorder that causes the central nervous system to be hypersensitive, says Karen P. Lauze, MD, a neurologist with a subspecialty in headache and facial pain at Portsmouth Regional Hospital. “It’s a biological abnormality that you’re born with,” Lauze says. Many migraine sufferers have a family member who has a history of migraines.

What it feels like

Migraine symptoms vary, but often progress through phases, beginning with what are called “prodrome” warning signs that can signal an approaching migraine up to one or two days before the headache pain hits. Prodrome symptoms include irritability, excessive yawning, fluid retention, constipation and nasal congestion, Lauze says. And, “some people actually feel euphoric a day or so or hours before a migraine,” Lauze says.
In some individuals prodrome symptoms are followed by a visual aura, during which flashing lights or jagged lines appear and partially obscure their vision, or they experience other neurological symptoms, such as numbness or tingling in their hand or difficulty putting words together. Auras usually last for 10 to 60 minutes and precede headache pain, but some people have auras without ever feeling pain.
In fact, despite the common assumption that migraines bring searing head pain that prompts sufferers to seek refuge in a dark, quiet room, migraine pain can be moderate or even mild, so much so that some people don’t realize that they’re having a migraine, believing instead that they’re feeling the effects of a less-intense tension headache, Lauze says.
In other cases, though, migraine pain is “incapacitating,” says Andreja Packard, MD, PhD, a neurologist and neurophysiologist at Foundation Neurology and Southern New Hampshire Medical Center in Nashua. Typically, migraines cause throbbing pain on one side of the head. The pain can last for hours, and be accompanied by nausea and vomiting. In addition, migraines often induce sensitivity to light and sound, Packard says.
"Migraines can occur in anyone at any age, but are three times more common in women than men."
Unlike tension headaches, which can be alleviated by exercise, migraine-associated pain typically is aggravated by activity, even low-key movement, such as standing, walking and bending over, Lauze says.
After the headache pain subsides, some people experience “postdrome” symptoms, as remnants of headache effects linger. Some individuals “feel hung over for a few hours,” Lauze says, “or the following day, they feel a little achy, a little run down.”

Feeling better

Doctors commonly prescribe medication to treat migraine headaches, but patients who have frequent migraines might find themselves going under the needle— the Botox needle — as a preventive measure.
Botox injections, well known for their cosmetic application in smoothing wrinkles, can decrease the frequency and severity of migraines by about 50 percent, Packard says. “We inject it in the muscles that are involved in the spread of neck pain and head pain within the migraine,” she says. Small-gauge needles loaded with Botox are used to target seven areas of the face and neck, Packard says, amounting to about 30-plus injections. Botox prevents strenuous tightening of the muscles, relaxing them along with the surrounding area. The injections typically need to be re-administered every three months to maintain effectiveness.
Migraine sufferers can also benefit from changing personal behaviors that make migraines more likely to occur. Keeping a headache diary, for example, helps people identify and avoid headache triggers. Noting the timing of headaches leads many people to find that changes in their biological rhythm set off migraines, Lauze says. You might find that not eating regularly, eating certain foods, drinking red wine, sleeping in or not getting enough sleep, or smelling particular odors precipitates migraines. Or you might notice that you’ve been stricken with migraines while on vacation, which by definition disrupts routine, and might involve altitude changes —another known migraine trigger, Lauze says.
Doctors have found that, ideally, a mix of therapeutic approaches will be in a migraine patient’s anti-migraine toolbox. “You need to have a combination of treatments,” Packard says. In addition to receiving medicine for the headache pain and recognizing and avoiding triggers, people who experience migraines should try stress relievers like yoga, relaxation training and massages, and if needed, they should see a psychologist to help them handle stress and anxiety, she says. Behavioral therapies such as biofeedback, in which electronic monitoring is used to enhance control over bodily functions, have also proven beneficial to migraine sufferers.
But don’t try to just ignore or live with migraines. Otherwise, they might occur more frequently since being in a migraine state can become the default mode for the brain, or more commonly, frequent self-treatment with over-the-counter medicine can spur withdrawal headaches, also known as rebound headaches, on the days that you try to go without the medication, Lauze says. Left untreated, migraines can become increasingly frequent until “you’re having them almost every day, and that can just basically ruin your life and make you chronically debilitated,” Lauze says.
And trying to live with discomfort can have meaningful health consequences, particularly in people who experience pain on a regular basis. Chronic pain shortens life expectancy and increases the chance of developing many long-term disorders, Packard says, “so treatment of any chronic pain issue is wise.” 
Read more here

Wednesday, August 21, 2013

Genetic link found between depression and migraine headaches

Migraine headaches and depression may have a genetic component linking them.

Previous research has demonstrated a strong association between migraine headache and depression. According to a study, this link between migraine, especially migraine with aura, and depression may be at least partially explained by genetic factors.
Scientists from the Netherlands studied members of a geographically and genetically isolated population in southwest Holland where all study participants were part of a large extended family. Of the 2600 people who were screen, 360 individuals had a history of migraine and more than 580 individuals had a history of depression. Using a statistical algorithm, the scientists found that patients with migraine headache associated with aura were the most likely to be depressed.
Based on the findings of this study, shared genetic factors may underlie the frequent co-occurrence of migraine and depression. The identification of common genetic factors for migraine and depression may significantly improve our understanding of the molecular basis for these common, and often disabling, conditions. Health care professionals should consider making note of migraine patients’ family histories of both headache and depression.
Read more here

Saturday, August 10, 2013

Migraines caused by different blood supply to the brain

Research shows that those who suffer from migraines may have a different way that blood is supplied to the brain.

In the UK alone, it is estimated that there are 190,000 migraine attacks per day. Migraines cause insufferable pain and can affect day-to-day living dramatically too – they can cause dramatic mood changes, and the throbbing pain can make it difficult or even impossible to sleep, work – and yet researchers have found it extremely difficult to pinpoint what causes them.

Now research published in PLOS ONE indicates that migraine sufferers have different arterial networks supplying the brain and this could help explain the cause.

Blood supply to the brain is slightly different to other parts in that it is protected by connections between the major arteries, thereby helping to ensure bloodflow at all times.

These connections are named ‘circle of Willis’ after the doctor who first pinpointed them. It’s these connections that appear to be different in people with migraine. Researchers from the Perelman School of Medicine at the University of Pennsylvania, US, looked at 170 people – one group who had no headaches, another who had migraine with aura, and one more group who had migraine without aura. Migraine with aura is defined as being typified by visual disturbances such as flashes of light, blind spots or tingling in the hands or face.

While 51% of people without headaches had an incomplete circle of Willis, the figures were significantly higher for those who did: 73% of people with migraine with aura; and 67% of those with migraine without aura.

Interestingly, when the researchers did magnetic resonance imaging to assess bloodflow they found that abnormalities in the circle of Willis were most prominent in the part of the brain that deals with vision. This, say the researchers, might explain why migraine sufferers often report seeing distortions, spots or wavy lines. The researchers are keen to point out, though, that the differences in circle of Willis between individuals is unlikely to be the only factor leading to migraine, and that other factors are almost certainly involved too. They do, however, suggest that checking the circle of Willis in patients could help pinpoint which contributory factors a patient has, thereby helping researchers move forward with testing different types of treatment.

Read more here

Wednesday, January 30, 2013

Migraine Triggers may not directly cause Migraines

Research has shown that migraine triggers may not be to blame for causing migraine headaches.

People who suffer from migraines often try to avoid potential triggers like bright or flickering lights or vigorous exercise. But, new research suggests that these events may not cause the painful and debilitating headaches.


"People with migraine with aura are told to avoid possible triggers, which may lead them to avoid a wide range of suspected factors," said study author Dr. Jes Olesen, with the University of Copenhagen in Denmark and a Fellow of the American Academy of Neurology, in a press release. "Yet the most commonly reported triggers are stress, bright light, emotional influences and physical effort, which can be difficult to avoid and potentially detrimental, if people avoid all physical activity."
Migraine with aura is a migraine which normally occurs with sensory warning signs like flashes of light, blind spots or tingling in your hands and face, according to the Mayo Clinic. "Aura" refers to a group of symptoms, including vision disturbances, that are a warning sign that the bad headache is coming.
A recent study showed that women who suffer from migraines with aura are at a greater risk for heart problems and blood clots.
For the study, researchers looked at 27 people who had migraines with aura who believed that bright or flickering lights, vigorous exercise or both had caused a prior episode.
They then subjected the participants to the trigger either by going on an intense run or using an exercise bike for an hour so they could reach 80 percent of their maximum heart rate. They were also exposed to bright, flashing or flickering light for 30 to 40 minutes. After each period, the subjects were monitored for three hours and asked if they had a migraine or migraine with aura.
Only 11 percent of participants said they had a migraine with aura after the light or exercise episode. Another 11 percent of people had a regular migraine.
"Our study suggests that if a person is exposed to a suspected trigger for three months and does not have a migraine attack, they no longer have to worry about avoiding that trigger," said Olesen.
Dr. Randall Berliner, a neurologist specializing in headaches at Lenox Hill Hospital in New York City, told HealthDay that the triggers may only work in specific situations. He was not involved in the study.
"Perhaps the triggers only exert their effect when the brain is already susceptible to a migraine," he said. He added that the study helps people understand the complex relationship between migraine triggers and migraines.
However, Dr. Stephen D. Silberstein, a professor of neurology at Thomas Jefferson University and the director of the Jefferson Headache Center who wrote an accompanying editorial, said to TIME that supposed triggers may in fact be symptoms of the migraine itself.
"You eat chocolate and you get a headache. Does that mean chocolate triggers the headache?" Silberstein explained. "What probably happens is the first symptom of your migraine attack is the desire to eat chocolate. Just like when you're pregnant, you might want pickles or ice cream. That's one end of the spectrum, where the desire to do something is part of the migraine attack, not the trigger."
The study was published online on Jan. 23 in Neurology.
Read more here


Saturday, January 26, 2013

Women With Migraine With Aura May Have Higher Risk of Heart Attack and Blood Clots

This article discusses health concerns for women who have migraines with aura. Such health concerns include cardiovascular problems such as heart attach and stroke.

Women who have migraines with aura, which are often visual disturbances such as flashing lights, may be more likely to have problems with their heart and blood vessels, and those on newer contraceptives may be at higher risk for blood clots, according to two studies released today that will be presented at the American Academy of Neurology's 65th Annual Meeting in San Diego, March 16 to 23, 2013.

The first study showed that migraine with aura is a strong contributor to the development of major cardiovascular events such as heart attack and stroke. The Women's Health Study involved 27,860 women, 1,435 of whom had migraine with aura. During the 15-year study, there were 1,030 cases of heart attack, stroke or death from a cardiovascular cause. The study examined the relative contribution of various vascular risk factors to these major cardiovascular events.
"After high blood pressure, migraine with aura was the second strongest single contributor to risk of heart attacks and strokes," said study author Tobias Kurth, MD, ScD, of INSERM, the French National Institute of Health and Medical Research in Bordeaux and Brigham and Women's Hospital in Boston. Kurth is also a Fellow of the American Academy of Neurology. "It came ahead of diabetes, current smoking, obesity, and family history of early heart disease."
Kurth cautioned that while people with migraine with aura have an increased risk, it does not mean that everyone with migraine with aura will have a heart attack or stroke. He said people with migraine with aura can reduce their risk in the same ways others can, such as not smoking, keeping blood pressure low and weight down and exercising.
The second study looked at women with migraine who take hormonal contraceptives and the occurrence of blood clots. The study involved women with migraine with and without aura who were taking both newer contraceptives such as the contraceptive patch and ring and older contraceptives. Of the 145,304 women who used the contraceptives, 2,691 had migraine with aura and 3,437 had migraine without aura.
Women with migraine with aura were more likely to have experienced blood clot complications such as deep vein thrombosis with all types of contraceptives than women with migraine without aura. For example, 7.6 percent of women with migraine with aura who used a newer generation combined hormonal contraceptive had deep vein thrombosis compared to 6.3 percent of women with migraine without aura, but the timing of the two events is not clear. The occurrence of blood clot complications was also higher in women with migraine who took contraceptives than women taking the contraceptives who did not have migraine.
"Women who have migraine with aura should be sure to include this information in their medical history and talk to their doctors about the possible higher risks of newer contraceptives, given their condition," said study author Shivang Joshi, MD, MPH, RPh, of Brigham and Women's Falkner Hospital in Boston and a member of the American Academy of Neurology.
Read more here