Have noted insomnia to be quite a common condition with symptoms present in about 33–50% of the adult population. It is the perception or complaint of inadequate or poor-quality sleep due to a number of factors, such as difficulty falling asleep, waking up frequently during the night with difficulty returning to sleep, waking up too early in the morning, or unrefreshing sleep. Insomnia is a sleep disorder that is characterized by difficulty falling and/or staying asleep. Insomnia is a common problem and affects nearly 10% of individuals.

Sleep disturbances are a common presentation in psychiatric disorders and specially disorders which affect the mood of a person. Insomnia with depression can be considered as an intermediate subtype between pure depression and isolated insomnia.

It was further shown that depression has not only qualitative but also quantitative effect on the sleep severely depressed people have the worse sleep pattern as compared with those with mild-to-moderate depression. Earlier, an epidemiological study has shown that persons with insomnia are at a higher risk of developing depression and anxiety disorders. Evidence from previous researches show that adolescents with disturbed sleep report more depression, anxiety, anger, inattention and conduct problems, drug and alcohol use, impaired academic performance, and suicidal thoughts and behaviors. The relationship between insomnia and depression is complicated, and our knowledge has changed significantly in the past decade regarding the relationship between these two entities.

Acute insomnia depression