While there are thousands of men and women who suffer from lack of sleep or insomnia (Buy Nuvigil 100mg Online), there are many who suffer from the right opposite condition. This condition, when it reaches difficult levels is referred to as narcolepsy. This word is used in medical terms to refer to those conditions where patients are unable to keep awake. In other words, they suffer from a condition where they fall asleep even when they are sitting or doing some work.