Excessive Daytime Sleepiness (EDS) means feeling drowsy and tired and having a need to sleep during the day. It means being unable to stay awake in the daytime, even after getting enough nighttime sleep, and it means falling asleep at times you don't want to or shouldn't sleep. People with EDS frequently doze, nap, or fall asleep in situations where they need to be or want to be fully awake and alert.

Excessive daytime sleepiness interferes with a person's ability to concentrate and perform daily tasks and routines. People with EDS often report feelings of low self-esteem, frustration and anger about being misunderstood and regarded as unintelligent or not interested in learning. They also report having poor personal relationships in social situations, in the workplace, and within the family.

Excessive daytime sleepiness can be a symptom of a medical condition and is characteristic of several sleep disorders. True EDS is rarely, if ever, caused by psychological or psychiatric disorders, such as depression.

If you think you are suffering from one of the following conditions, please take a moment and answer our two sleep questionnaires to determine the level of your daytime sleepiness. Then see your doctor for a complete medical evaluation, and bring your completed questionnaires with you for the doctor to review.