Common causes of insomnia include stress, an irregular sleep
schedule, poor sleeping habits, mental health disorders, physical
illnesses and pain, medications, neurological problems, and
specific sleep disorders. For many people, a combination of these
factors can initiate and exacerbate insomnia. Not all insomnia is
the same. People can experience the condition in distinct ways.
How a person is affected by insomnia can vary significantly
based on its cause, severity, and how it is influenced by
underlying health conditions.