inability to sleep peacefully

Insomnia is when people cannot sleep for long or short periods. A person with this problem is called an insomniac. Insomnia can mean a problem with getting to sleep or a problem with staying asleep. Insomnia is a symptom and not a disease or illness.[1]

Different kinds of insomniaEdit

There are at least three different types of insomnia:

  1. Transient Insomnia: this lasts from one night to a few weeks.
  2. Acute Insomnia: lasts from a few weeks to about six months.
  3. Chronic Insomnia: lasts for years at a time.


There are many causes of insomnia. Some of them are:


There are drugs available that can help treat the different kinds of insomnia. In some cases, there are also certain herbs that can help. A third way that seems to help is a type of therapy that aims at changing the behaviour of those affected.


  1. Yudofsky, Stuart C.; Hales, Robert E. (2004). Essentials of Neuropsychiatry and Clinical Neurosciences. American Psychiatric Publishing. p. 322. ISBN 978-1-58562-005-0. ...insomnia is a symptom. It is neither a disease nor a specific condition.