Insomnia subtype affects daytime functioning

This article discusses research about insomnia. It follows revision of the mental health classification manual (DSM-V) that emphasizes insomnia as a disorder, rather than as a symptom of another mental, medical, or sleep disorder. Researchers surveyed people with insomnia. Results showed that in those with the most sleep disruption - both onset and maintenance problems, coexisting mental health problems, and if it started in childhood, have the most daytime impact. This makes sense to me and fits what I see in my chronic insomnia patients.