People have trouble falling asleep from time to time due to stress, a family crisis, or medications. Insomnia, also known as sleeplessness, is chronic trouble falling asleep, getting back to sleep, or waking up too early. 

Chronic insomnia may result from depression, anxiety, or another sleep disorder. Poor sleep patterns, change in surroundings, tobacco, caffeine, and drug use contribute to insomnia also. Waking up grouchy in the morning, feeling like you have not rested enough is a common symptom of insomnia. Too little sleep can affect judgment, memory, and the immune-system. 

Diagnostics include polysomnography, where your sleeplessness is observed in a sleep lab that monitors movements, breathing, and brain activity. 

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