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    Kicking Up a Storm? It Could Be ADHD

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    WebMD Health News

    May 7, 2001 (Philadelphia) -- Adults with restless leg syndrome, who can't keep still even when they're asleep, are more likely than others to have attention deficit hyperactivity disorder (ADHD), report researchers here at the annual meeting of the American Academy of Neurology.

    People with restless leg syndrome, or RLS, report feeling discomfort in their legs when they are sleeping or inactive. The sensations range from a mild tingling to a feeling of creeping, crawling, pulling, or pain. One or both legs may be affected, with the sensations occurring when the person is sitting still -- in the office, at the movies, etc. -- or lying down.

    Moving or stimulating the legs can relieve the discomfort, but the syndrome can interfere with normal sleep, resulting in daytime fatigue and sleepiness.

    "Some patients are so bad that the minute they sit down or lie down, the symptoms begin again and they have to start anew by getting out of bed and walking or pacing," says Arthur Walker, MD, a neurologist with the New Jersey Neuroscience Institute at JFK Medical Center in Edison and professor of neuroscience at Seton Hall University in South Orange, N.J.

    "Nighttime is the worst time for these patients -- they're lying down to go to sleep, and they can't," he says. As many as 10% of adults may have RLS, with symptoms ranging from mild to severe, he says.

    In a study looking at 56 adults with RLS and 77 adults without the condition, nearly 40% of those with restless legs were deemed to have "probable" ADHD, compared with only 14% of people without RLS. When it came to having "highly probable" ADHD, 21% of those with RLS qualified, compared with only 4% of the other subjects.

    The study suggests that, "people with RLS should also be tested for ADHD and vice versa. That way, these disorders can be diagnosed and treated more effectively," says Mary L. Wagner, PharmD, at Rutgers University in Piscataway, N.J.

    According to the National Institutes of Health, ADHD is the most commonly diagnosed behavioral disorder of childhood, affecting an estimated 3-5% of school-age children. Kids with ADHD have a hard time concentrating or paying attention in school and at home, are easily distracted, and behave impulsively. ADHD can also have long-term effects on academic performance, career success, and relationships.

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