Insomnia, by itself, is not a disease. It may be a symptom of a physical and emotional imbalance or just manifestation of fatigue caused by lack of sleep. This condition is manifested by any of the following: a) light, interrupted sleep that one is still tired upon waking up, b) not being able to sleep, even if fatigued, c) lack of sleeping hours. Although this condition is usually temporary, insomnia may be classified based on the length of time it has affected the patient.

* Transient Insomnia - This circumstance remains just for a couple of days. Transient insomnia is typically caused by tension or as a direct reaction to change. It is occasionally called adjustment sleep disorder. The disorder might spring up after a traumatic issue or even during minor changes such as travelling or atmospheric condition changes.

Caffeine and nicotine are likewise maintained to affect sleeping patterns. Caffeine, which is present in coffee, and nicotine, existing in cigarettes, can induce transient insomnia. In most cases, treatment for transient insomnia is not needed. It usually concludes after a few days once the individual was capable to adapt to the brand-new situations or environment.

* Short-term Insomnia - This lasts for three weeks or less. Short-term insomnia and transient insomnia are almost similar in their causes.

Female hormonal changes can affect sleep patterns. One of the female hormones, progesterone, promotes sleep. During menstruation, when its levels are low, women may experience insomnia. On the other hand, during ovulation, the increase in progesterone levels increases sleepiness. Fluctuations in the level of progesterone during pregnancy and menopause cause altered sleeping patterns leading to transient insomnia. Although women after 50 also experience chronic insomnia, this is usually caused by psychological or emotional factors.

Varieties in working circumstances, such as switching schedules, also cause short-term insomnia. Likewise, people who incline to overwork get less rest than the average. In one case, insomnia was also discovered in people doing a great deal of computer work.

Light can also touch on one's sleep. A bit much light at nighttime can interrupt sleep or even prevent sleepiness. Also, little light during the day, as in disabled or senior patients who seldom go out can also cause short-term insomnia. This is since the degrees of melatonin reacting to darkness. Melatonin is a hormone secreted by the pineal gland, a pea-sized gland at the centre of the brain, that assists and regulates the cycles of sleeping and awaking.

* Chronic insomnia - when an individual could not sleep, has discontinuous sleep, or is all the same exhausted after sleeping; and the circumstance repeats for more than two nights each week for more than one calendar month. Also, it is characterised when the patient is wore out and supposes that his day-to-day activities are affected by this sleeping precondition.

Based on the causes, chronic insomnia may be further defined into principal or secondhand: * Primary chronic insomnia - when the insomnia is not made by any physical or psychological imbalance. * Secondary chronic insomnia - may be caused by physiological and mental conditions, such as depressive disorder, or emotional and psychiatric disorders.

In one study, in industrialized nations, chronic insomnia affects about ten percent of adults. Insomnia can affect a patient during daytime when patient may experience sleepiness in the mornings or in the afternoon. Some, despite their sleepiness report failure to nap. Even worse, another group reported excessive energy during the day. These people are more anxious and even more irritable.

Due to failure to acquire adequate rest, these people have subdued concentration. If someone has pre-existing medical condition, such as orthopaedic pain or arthritis, this may be aggravated by insomnia. When one suspects that he or she has insomnia, consulting a doctor would be the safest advise. One of these therapies may also be attempted.

* Minimizing consumption of caffeine containing beverages. This includes coffee, colas and chocolate. It is advised to restrict consumption after 3pm. For most people, these substances are eliminated from the body in a few hours. But some people have slow biologic elimination process, which caffeine can stay in the body longer than the average.

* People can also limit stay in bed during the sleeping hours. This is effective to increase the tendency to sleep when in bed.