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Medindia » Consumer Health » Health Information » Circadian Rhythm and Sleep Disorders - Diagnosis

Circadian Rhythm and Sleep Disorders

Diagnosis
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An accurate history forms the basis for diagnosing these disorders. Obtaining a detailed account of the sleep habits, medical history and the medications used is necessary.

Sleep diary: While not technically a laboratory test, this diary allows identification of sleep-wake cycles in the normal environment and allows subjective assessment of alertness over a 2-week time period. Sleep logs also can be used for self-monitoring and as an adjunct to behavioral treatment.


Epworth Sleepiness Scale (ESS): This scale is based on a set of eight questions and rate responses on a scale of 0 -3 based on whether the situation was likely to be associated with dozing behavior. It was designed to give an indication of daytime sleepiness.

Actigraphy: An Actigraph is a small motion-sensing device worn on the nondominant wrist, generally for 1 week. It is based on the premise that wrist motion is decreased during sleep. This allows a very gross measure of sleep-wake cycles over time.

An overnight sleep study called a polysomnogram is usually not needed to detect a CRSD. It may be done to rule out other sleep disorders.

Imaging studies, such as CT scan and MRI, may be done to evaluate for neurodegenerative diseases.

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If you have a question about health related issues, you can now post it in our Ask An Expert section on our community website Medwonders.com and get answers from our panel of experts.
Posted by:  Annycantsleep(Guest)  Posted on: 02/24/2009
I have delayed sleep phase syndrome (fall asleep around 3am)and wonder what jobs others with same problem have as I can no longer do the 9-5 office thing...its killing me! Love to get some ideas about alternate industries...thanks so much!

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Posted by:  monsie  Posted on: 12/27/2008
I suffer from macular degeneration. I wonder if light therapy would be beneficial for me. I need to know.
Thanks
monsie

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