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    New Clues to Chronic Dizziness

    Psychiatric, Neurological Problems May Cause Unexplained Dizziness, Study Shows
    By
    WebMD Health News
    Reviewed by Louise Chang, MD

    Feb. 20, 2007 – Unexplained chronic dizziness has long puzzled doctors, but a new study sheds light on the possible causes of the condition.

    Both neurological problems, such as migraines, and psychiatric problems, such as anxiety, may play roles, and it's often not an "either/or" situation, says Jeffrey Staab, MD, a researcher for the study and the attending psychiatrist at The Balance Center at University of Pennsylvania in Philadelphia.

    "In some cases, it is definitely neurologic or psychiatric," Staab says. "But more often than not, when someone has chronic dizziness, you have both a neurologic and psychiatric contribution that worsen each other in a vicious cycle."

    The Problem

    Staab focused on a type of chronic dizziness not related to vertigo -- the feeling of whirling usually linked with inner ear problems. Among these forms of dizziness, he says, is one type that is particularly mysterious.

    He focused on this type, which has been called "psychogenic dizziness" and is associated with anxiety. He prefers to call it chronic subjective dizziness.

    Patients who have it feel dizzy, off-kilter, imbalanced, and are very sensitive to motion stimuli, such as crowded environments or heavy traffic, Staab tells WebMD.

    "The best way to understand this form is to shake your head back and forth 20 times," he says. When you are done, that is the feeling these people feel, he notes.

    When these patients enter an environment filled with visual stimuli, such as having to drive in the rain or navigate through a busy grocery store, the dizziness gets worse. "Too much sensation is coming in to the brain," Staab says of the condition, which can be disabling.

    "About 3% to 5% of American adults have recurrent bouts of dizziness," Staab says. About 1% have persistent dizziness.

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