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Marijuana Use Linked With Excessive Daytime Sleepiness in Some Teenagers

by Dr. Trupti Shirole on February 16, 2015 at 1:24 AM
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 Marijuana Use Linked With Excessive Daytime Sleepiness in Some Teenagers

Marijuana use may be associated with excessive daytime sleepiness in some teenagers, revealed researchers from Nationwide Children's Hospital. During the study it was seen that 10 percent of adolescents sent to a Sleep Center for evaluation of excessive daytime sleepiness with testing results consistent with narcolepsy had urine drug screens positive for marijuana.

Senior author of the study, Mark L. Splaingard, said, "Our findings highlight and support the important step of obtaining a urine drug screen, in any patients older than 13 years of age, before accepting test findings consistent with narcolepsy, prior to physicians confirming this diagnosis. Urine drug screening is also important in any population studies looking at the prevalence of narcolepsy in adolescents, especially with the recent trend in marijuana decriminalization and legalization."

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A diagnosis of narcolepsy is made after a clinical evaluation for excessive daytime sleepiness, followed by a standardized multiple sleep latency test (MSLT). The test consists of 4-5 scheduled day time nap opportunities in which speed of sleep onset and presence of rapid eye movement sleep (REM) are both calculated. However, adult studies have shown that a variety of different medications and illicit drugs may affect the results of MSLT.

The study found that 43 percent of children with urine drug screens positive for marijuana actually had test results consistent with narcolepsy or abnormal REM sleep patterns. No child younger than 13 years of age had a positive urine drug screen. The findings suggest that males were more likely to have a positive urine drug screen and MSLT findings consistent with narcolepsy.
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Dr. Splaingard said, "We believe that many of the children who had positive urine drug testing for marijuana and testing consistent with narcolepsy had improvement of the symptom of excessive day time sleepiness after enrollment in a community drug program, because most didn't come back for repeat diagnostic studies once they were drug-free. A key finding of this study is that marijuana use may be associated with excessive daytime sleepiness in some teenagers. A negative urine drug screen finding is an important part of the clinical evaluation before accepting a diagnosis of narcolepsy and starting treatment in a teenager."

The study is published in Journal of Clinical Sleep Medicine.

Source: Medindia
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