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Noroxin (Norfloxacin)

Classification of headaches into three groups is an oversimplification. Some people have both migraine and cluster headaches, or tension headaches alternating with migraines. After years of arguing over how to diagnose headaches, the specialists got together in 1988 and issued a standard manual that covers nearly 100 different kinds of headaches.
“For the first time, we have criteria for diagnosing headaches,” says Dr. Lipton of Montefiore. This “headache bible” will allow researchers to know that they are all talking about the same kind of headache.
There are as many theories on the origin of headaches as there are headache specialists. There is agreement that the brain itself isn’t hurting, because the brain has no nerves for experiencing pain. However, the arteries in the brain do have pain nerves. If something hurts or inflames them, the arteries transmit pain signals to the conscious center of the brain. That may be why headaches throb. Every time your heart pumps, it sends blood pulsing through the arteries, stretching them. With each stretch, you sense a pain signal if the artery hurts.
But what inflames the arteries? Some evidence suggests that changes in the amounts of various brain chemicals may do it. Dr. Michael Welch, chief neurologist at Henry Ford Hospital in Detroit, has focused high-tech attention and equipment on this problem.
Using an instrument sensitive to magnetism, Dr. Welch follows changes in the brain’s magnetic field during a headache. He says he thinks he can see the brain respond to the factors that trigger a headache. Another instrument helped him discover that magnesium drops to low levels in the brain before and during a migraine attack. In a third technique, he follows the ebb and flow of blood in the brain before, during, and after a headache.
Dr. Welch and Dr. Sandra Nagel-Leiby work at putting the pieces together to reveal a picture of headaches – how they vary, who gets them, and why. It turns out that all of us can suffer from a headache. Some of us are more susceptible. Older individuals get more headaches, and so do women (menstruation increases risk of headache). Those who suffer from chronic stress at work or home, or who take oral contraceptives, are prone to headaches.
With a lowered resistance to headaches, other events trigger the actual pain. Chocolate, cheese, wine, and other foods that contain substances, such as tyrarnine, can touch off a headache. Acute stress – from an auto accident or from taking an important examination, for example – can do the same. Glaring light can spark the pains. So can certain drugs, unfortunate combinations of drugs, or a blow to the head.

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