Insomnia is a common sleep disorder that regularly impacts millions of people throughout the world. Those who suffer from this condition finds it tough to stay asleep. Daytime sleepiness, mood swings, lethargy, anxiety, and irritability, are some of the common annoying symptoms associated with it. If this condition prevails for a longer time, then it can lead to development of chronic diseases in a person. In this article, we will talk about this disorder, and ways to treat, and prevent this condition. What Is Insomnia? Insomnia is one of the most troublesome issues that prevents a person from staying asleep.