Insomnia symptoms may include: 
Difficulty falling asleep at night
Waking up during the night
Waking up too early
Not feeling well-rested after a night's sleep
Daytime tiredness or sleepiness
Irritability, depression or anxiety
Difficulty paying attention, focusing on tasks or remembering
Increased errors or accidents
Ongoing worries about sleep
 When to see a doctor If insomnia makes it hard for you to function during the day, see your doctor to identify the cause of your sleep problem and how it can be treated. If your doctor thinks you could have a sleep disorder, you might be referred to a sleep center for special testing.