Causes and Symptoms of Insomnia

Insomnia may be caused by many factors, including:

• stress
• depression
• anxiety
• physical illness
• caffeine intake
• irregular schedules
• drugs (including alcohol and nicotine)
• occasional or chronic pain

The symptoms of insomnia include:

• daytime sleepiness
• low energy or fatigue
• anxiety or frustration about sleep
• attention, concentration or memory problems
• waking up tired or in pain