This sleep disorder can be short
term (acute) or long term (chronic), lasting weeks or months. It can be linked to
outside cause, such as stress, medicine, or a health condition. When insomnia is the
result of an outside cause, it's called secondary insomnia. Primary insomnia is not
caused by outside events. Its cause is not known. A healthcare provider may use an
actigraphy to help diagnose insomnia. An actigraphy is a test that monitors your
and activity cycles over a a few days or weeks.
Here is more information about some types of insomnia:
occurs when someone becomes anxious about sleeping and concentrates too intently
on trying to sleep. In other words, the stress about sleeping itself causes
formerly known as sleep-state misperception, is a sleep disorder marked by a
significant difference between the time a person thinks he or she has been asleep
and how much time he or she has actually slept. People with this problem may
complain that they can't fall asleep but don’t have any problems during the day
even though they believe that they hardly slept. They are actually sleeping when
they think they aren't and have no evidence of a sleep disorder.