When it comes to insomnia, there are many causes.
Some of these may be situational factors, some of these may be due to primary sleep problems, and some of them may be medical or even psychiatric conditions.
Insomnia is of three types - transient (where the symptoms last up to one week), short term (where the symptoms last between one and three weeks), and chronic (where the symptoms continue for more than three weeks).
The causes of transient and short term insomnia may include jet lag, excessive unpleasant noise, changes in the shift work, and uncomfortable level of temperature (either the room is too hot or too cold), or even a stressful situation like death of a loved one, loss of employment, divorce, separation, etc.
There may also be other causes like a prolonged illness, a surgery, or even withdrawal from drugs, alcohol, sedatives or stimulant medications.
Of course, when it comes to insomnia, there are also psychological factors that come into the equation and act as causes - like stress, anxiety, schizophrenia, mania, depression, bipolar disorder, etc.
In fact, you would be surprised to know that insomnia itself is treated as a sign of depression by most psychiatrists.
Various medical conditions that trigger insomnia include acid reflux disease, congestive heart failure, chronic pain syndromes, chronic fatigue syndrome, night time angina from heart disease, obstructive sleep apnea, nocturnal asthma, etc.
There are also degenerative diseases like Parkinson's disease and Alzheimer's which cause insomnia, as well as brain tumors and strokes which must also be considered as causes.
However, no matter what the cause of insomnia is, you can be sure that this is not a problem that you have to suffer with, there are treatments and cures you can try - not just natural remedies but also over-the-counter medication.
If you try hard enough you can definitely beat the problem.