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• 10 Ways to Rest With a Cold
• When Nightmares Won't Go Away
• Do You Have Insomnia?

Medical ReferenceRelated to Sleep Disorders

31. Causes of Obstructive Sleep Apnea
    
    From a deviated septum to tonsillitis to alcohol use, OSA, or obstructive sleep apnea, has many possible causes. Learn more from WebMD.
    
32. Sleep and Hypersomnia
    
    WebMD looks at the condition called hypersomnia, characterized by excessive daytime sleepiness.
    
33. Sleep and Psychiatric Disorders
    
    WebMD looks at the close connection between psychiatric disorders, such as depression, and sleep disorders.
    
34. Drug- and Alcohol-Related Sleep Problems
    
    WebMD looks at how the use of drugs -- illegal and legal -- and alcohol can lead to sleep problems.
    
35. Sleep and Chronic Illness
    
    Having a chronic illness often leads to sleep problems. Learn more from WebMD about treatments and techniques that may help you get a good night's sleep.
    
36. Non-24-Hour Sleep-Wake Disorder
    
    ImportantIt is possible that the main title of the report Non-24-Hour Sleep-Wake Disorder is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
    
37. Narcolepsy
    
    Important It is possible that the main title of the report Narcolepsy is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report. ...
    
38. Apnea, Sleep
    
    Sleep apnea is a sleep disorder characterized by temporary,recurrent interruptions of breathing (respiration) during sleep. Symptoms of this disorder include periodic wakefulness during the night,excessive sleepiness during the day,and loud snoring during sleep. People with this disorder are frequently overweight. Diagnosis and treatment of sleep apnea can avoid serious medical problems ...
    
39. Insomnia: Questions and Answers for Your Doctor
    
    The experts at WebMD provide a list of questions to ask your doctor -- and the questions your doctor will likely ask you -- if you seek medical help for insomnia.
    
40. Daytime Fatigue: The Cost of Insomnia
    
    How does daytime fatigue affect your health? Get answers and tips from the experts at WebMD.