Insomnia is the lack of sleep. Not being able to sleep.
Sleep
That is the correct spelling of the term "insomnia" (inability to sleep).
Insomnia is more common as you age. But if, at any stage in life, you aren't sleeping restfully and waking refreshed, talk to your doctor about mirtazapine, it's not a classic "sleeping pill" but will help you sleep like you did when you were 17.
People get insomnia becuase they are so exicted or worried about something they can't sleep. It can aslo be caused by a sleep disorder.
You can't sleep.
Go to sleep
Intermittent means it happens occasionally; insomnia is a sleep disorder wherein a person physically cannot go to sleep.
When you go 2 weeks without sleep you begin to develop insommnia. Then a month and you have Adam's current stage (on and off for 3 months).
A person who has a sleeping problem is called an Insomniac.
Your disturbance might not be insomnia. But lack of sleep or too much eating before you go to bed. Insomnia is usually something worse where you are in movement but your body is asleep.
"Sleep apnea and insomnia are two very common sleep disorders in the United States today. Sleep apnea is a breathing problem while sleeping, which can lead to many other problems, and insomnia is the inability to fall asleep."