2. What is Sleep disorders?
More than 100 different disorders of sleeping and waking have been identified. They can be grouped in four main categories:
MedHelp Q&A

3. Sleep and Sleep Disorders - DACH
While we often consider sleep to be a “passive” activity, sufficient sleep is increasingly being recognized as an essential aspect of health promotion and chronic disease prevention in the public health community.
Centers for Disease Control and Prevention

4. Sleep Disorders (PDQ®): Supportive care - Patient Information [NCI]
This patient summary on sleep disorders is adapted from a summary written for health professionals by cancer experts. This and other credible information about cancer treatment, screening, prevention, supportive care, and ongoing clinical trials i.....
Healthline.com (OMS Preferred Provider)

5. Sleep Disorders : Search Results - healthfinder.gov - Your Source for Reliable Health Information
Narcolepsy is a sleep disorder of neurological origin, characterized by excessive daytime sleepiness. Learn more about this disorder.... Details >
HealthFinder.gov

6. Sleep Disorder Symptoms - Sleep Terror Disorder - Sleep Disorders
Recurrent episodes of abrupt awakening from sleep, usually occurring during the first third of the major sleep episode and beginning with a panicky scream.
www.mentalhelp.net

7. Psych Central: Sleep Terror Disorder Symptoms
Sleep terror disorder is also known as "night errors." Sleep terror is characterized by the following symptoms that a professional looks for when making a diagnosis for this condition:
psychcentral.com

8. Sleep Disorder, Night Terrors: [Print] - eMedicine Pediatrics: Developmental and Behavioral
Sleep disruption is a frequent concern among parents of children aged 2 years or younger. Half of all infants develop a disrupted sleep pattern serious enough to seek physician evaluation.
emedicine.medscape.com

9. Type of Sleep Disorders: Night Terrors, Sleepwalking, Stages of Sleep Cycle: Merck Manual Home Edition
Sleep is necessary for survival and good health, but why sleep is needed and exactly how it benefits people are not fully understood. Individual requirements for sleep vary widely: usually from 6 to 10 hours every day. Most people sleep<...
merck.com

10. Sleep Disorders Information
Chronic Obstructive Pulmonary Disorder; Fibromyalgia; Nocturnal Cardiac Ischemia; Peptic Ulcer Disease; Sleep Related Asthma;
www.stanford.edu