Dyssomnias are primary sleep disorders in which the patient suffers from changes in the amount, restfulness, and timing of sleep. The most important dyssomnia is primary insomnia.
Circadian rhythm sleep disorder is a disorder that affects the timing of sleep. People with this disorder typically have issues waking up by alarm clock but can sleep and wake when they wake by their body clock. You can get more information about this disorder at the Wikipedia.
W. W. Hall has written: 'Sleep' -- subject(s): Sleep disorders, Sleep, Dyssomnias 'Hall's health tracts' -- subject(s): Medicine, Popular Medicine 'How to live long, or, Fun better than physic' -- subject(s): Health education, Conduct of life, Morale pratique, Education sanitaire 'Fun better than physic' -- subject(s): Hygiene 'Health and disease, as affected by constipation' -- subject(s): Etiology, Therapy, Constipation 'Dyspepsia, and its kindred diseases' -- subject(s): Indigestion, Digestion, Stomach, Diseases, Dyspepsie, Estomac, Maladies
There are many types of sleeping disorders. You'll be surprised to know that some of them are still a mystery to doctors and being researched upon. The more common ones are : 1. Restless Leg Syndrome - where there is an urge to move the limbs continuously, often in an uncontrollable manner 2. Periodic Limb movement - an involuntary rhythmic movement of the limbs that happens at random 3. Insomnia - inability to sleep for any fair length of time 4. Sleep Apneas - A gasping for air, chocking, loud snoring or never getting a refreshing sleep 5. Night eating syndrome - characterized by frequent night waking in which the patient is unable to fall back to sleep unless he/she eats something. 6. Narcolepsy - Uncontrollable urge to fall asleep unexpectedly in the middle of an activity or conversation. If you are having trouble sleeping or sleeping and finding that you do not feel refreshed when you awake, consider seeking help from a professional.