Insomnia

 

Insomnia Overview

Most adults have experienced insomnia or sleeplessness at one time or another in their lives. An estimated 30%-50% of the general population are affected by insomnia, and 10% have chronic insomnia.
Insomnia is a symptom, not a stand-alone diagnosis or a disease. By definition, insomnia is "difficulty initiating or maintaining sleep, or both" or the perception of poor quality sleep. Insomnia may therefore be due to inadequate quality or quantity of sleep. Insomnia is not defined by a specific number of hours of sleep that one gets, since individuals vary widely in their sleep needs and practices. Although most of us know what insomnia is and how we feel and perform after one or more sleepless nights, few seek medical advice. Many people remain unaware of the behavioral and medical options available to treat insomnia.
Insomnia is generally classified based on the duration of the problem. Not everyone agrees on one definition, but generally:

• symptoms lasting less than one week are classified as transient insomnia,
• symptoms between one to three weeks are classified as short-term insomnia, and
• those longer than three weeks are classified as chronic insomnia.

Statistics on InsomniaInsomnia affects all age groups. Among adults, insomnia affects women more often than men. The incidence tends to increase with age. It is typically more common in people in lower socioeconomic (income) groups, chronic alcoholics, and mental health patients. Stress most commonly triggers short-term or acute insomnia. If you do not address your insomnia, however, it may develop into chronic insomnia.
Some surveys have shown that 30% to 35% of Americans reported difficulty falling asleep during the previous year and about 10% reported problems with long standing insomnia. There also seems to be an association between depression, anxiety, and insomnia. Although the nature of this association is unknown, people with depression or anxiety were significantly more likely to develop insomnia.

Insomnia Causes

Insomnia may be caused by a host of different reasons. These causes may be divided into situational factors, medical or psychiatric conditions, or primary sleep problems. Insomnia could also be classified by the duration of the symptoms into transient, short-term, or chronic. Transient insomnia generally last less than seven days; short-term insomnia usually lasts for about one to three weeks, and chronic insomnia lasts for more than three weeks.
Many of the causes of transient and short-term insomnia are similar and they include:

• Jet lag
• Changes in shift work
• Excessive or unpleasant noise
• Uncomfortable room temperature (too hot or too cold)
• Stressful situations in life (exam preparation, loss of a loved one, unemployment, divorce, or separation)
• Presence of an acute medical or surgical illness or hospitalization
• Withdrawal from drug, alcohol, sedative, or stimulant medications

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