Which of the following conditions is more common, generally tied to behavior such as substance abuse, and often to other medical disorders such as heart disease?

Question

Quizplus · Accepted Answer

Secondary insomnia is more common and can be caused by behavior such as substance abuse, as well as other medical disorders. Primary insomnia is not tied to a specific cause or behavior, and tertiary and quaternary insomnia are not recognized as official medical conditions.

Which of the Following Conditions Is More Common, Generally Tied