Insomnia is a sleep disorder characterized by chronic problems falling asleep, staying asleep or only sleeping for several hours and being wake unable to fall back to sleep. It is typically followed by functional impairment while awake. Both organic and non-organic insomnia constitute a sleep disorder.
It can be caused by another disorder, by changes in the sleep environment, by the timing of sleep, or by stress. Researchers do not know exactly why people need sleep, but we do know that lack of sleep can kill. Humans deprived of sleep for long periods begin hallucinating and develop other mental problems.
Important hormone production is regulated during sleep; in children, human growth hormone (HGH) is released during deep sleep. Insufficient sleep can affect hormonal balance in adults as well. Getting enough deep sleep and they do know that people can go longer without food than without sleep. During sleep the subject’s Sleep metabolic rate and energy consumption are reduced. The cardiovascular system also slows down during sleep as blood pressure drops as well as
Insomnia can be caused by another disorder, by changes in the sleep environment, by the timing of sleep, or by stress. Its consequences - sleepiness and impaired psychomotor performance - are similar to those of sleep deprivation. If this form of insomnia continues to occur from time to time, the insomnia is classified as intermittent.
Acute insomnia is the inability to consistently sleep well for a period of between three weeks to six months.
Chronic insomnia lasts from months to years. Insomnia occurs 1.4 times more commonly in women than in men.
If you suspect you have a sleep disorder, a sleep specialist can confirm if your suspicions are correct – and make a careful and detailed medical evaluation to find the source of your sleep problem.
A doctor or a sleep specialist can diagnose your sleep disorder based on a number of factors, including:
• A description of your symptoms
• Your age
• Your gender
• Your psychological history
• Your medical history
Insomnia can be caused by the following habits and conditions whick risk factors for developing a sleep disorder:
• Poor sleep environment (e.g., too noisy, too brightly lit, too hot, or too cold)
• Excessive use of caffeine, alcohol, or certain medications and drugs
• Smoking or chewing tobacco
• Anxiety, depression, or another mood disorder
• Stress, such as the death of a loved one or job pressure
• Unhealthy or irregular sleep routine
• Early or late-night bedtimes
• Traveling between time zones
• Daytime napping
• Shift work with a rotating schedule