What causes insomnia?
Insomnia has many causes which can include:
• Some medicines and drugs, e.g. asthma or blood
pressure medication, caffeine, alcohol or smoking
• Chronic pain and other uncomfortable illnesses
• Stress at work or in your personal life
• Depression
• A friend or loved one passing away
• Anxiety and worrying, including worrying about not
getting enough sleep
• Another sleep problem (see Ten Common Sleep
Disorders)
Sometimes there is no clear cause for insomnia, in which
case it is called primary insomnia.