In many cases, insomnia is co-morbid with another disease, side-effects from medications, or a psychological problem. Approximately half of all diagnosed insomnia is related to psychiatric disorders. For those who have depression, "insomnia should be regarded as a co-morbid condition, rather than as a secondary one;" insomnia typically predates psychiatric symptoms. "In fact, it is possible that insomnia represents a significant risk for the development of a subsequent psychiatric disorder." Insomnia occurs in between 60% and 80% of people with depression, and can be a side effect from medications that treat depression.
In many cases insomnia is co-morbid with another disease side-effects from medications or a psychological problem Approximately half of all diagnosed insomnia is related to psychiatric disorders For those who have depression "insomnia should be regarded as a co-morbid condition rather than as a secondary one;" insomnia typically predates psychiatric symptoms "In fact it is possible that insomnia represents a significant risk for the development of a subsequent psychiatric disorder" Insomnia occurs in between 60% and 80% of people with depression and can be a side effect from medications that treat depression