Insomnia is an annoying sleep disorder that involves difficulty with either staying or falling asleep. Insomnia comes in two forms, primary or secondary.NHLBI: What Is Insomnia?

Insomnia is the most common sleep disorder affecting people in the United States.NSF: All About Insomnia There are as many as one in ten Americans suffering from chronic insomnia, in contrast to the one in three adults with the transient episodes.NHLBI: Who Is At Risk For Insomnia?

• Unable to fall asleep
• Unable to stay asleep
• Not getting a good night sleep

• Depression
• Excessive day time sleepiness
• Fatigue

The content in this page is not a substitute for professional medical advice. If you think you have insomnia, please make sure to consult your doctor.

* Psychophysiological Insomnia, Difficulty Initiating and Maintaining Sleep (DIMS) * Sleep State Misperception * Obstructive Sleep Apnea (OSA) * Central Sleep Apnea (CSA) * Sleep Hygiene and Environmental Sleep Disorder * Altitude Insomnia * Adjustment Sleep Disorder * Limit-Setting Sleep Disorder * Sleep-Onset Association Disorder * Food Allergy Insomnia * Medication-Dependent Sleep Disorder * Stimulant-Dependent Sleep Disorder * Alcohol-Dependent Sleep Disorder * Toxin-Induced Sleep Disorder * Time-Zone Change (Jet Lag) Syndrome * Shift Work Change Sleep Disorder (SWC) * Irregular Sleep-Wake Pattern * Delayed Sleep-Phase Syndrome (DSPS) * Advanced Sleep-Phase Syndrome * Non-24-Hour Sleep-Wake Syndrome * Nocturnal Leg Cramps

• ScienceDaily: Insomnia News
• HealthDay: Persistent Insomnia Leads to Depression in Young Adults (April 2, 2008)
• ScienceDaily: Adolescents With Chronic Insomnia Report 'Twofold To Fivefold' Increase... (March 23, 2008)
  • "Chronic insomnia is costing adolescents more than sleep. It's been linked to a wide range of physical, psychological and interpersonal problems, according to public health researchers at The University of Texas Health Science Center at Houston, who completed the first prospective study of adolescents with persistent sleep problems."
• Times Online: Why you can't sleep (March 20, 2008)
• HealthDay: Smokers Sleep Less Soundly (February 5, 2008)
• HealthDay: Sleepless Kids Are Troubled Kids (August 26, 2007)
• Daily Mail: New 'sleep machine' could signal the end of insomnia (May 2, 2007)
• HealthDay: Poorer Kids Have Poorer Sleep: Study (May 2, 2007)
• Pharmaceutical Business Review: Insomnia: serotonin agonists set to expand market (May 1, 2007)
• HealthDay: Generic Ambien Approved (April 23, 2007)