[Differential diagnosis of insomnia from other comorbid primary sleep disorders].

The "insomnia complaint" currently has a very high prevalence in the medical consulting room. This assumes that any doctor must have some basic notions of how to approach it. But currently, there are certain aspects that hinder this approach, especially when the "insomnia disorder" needs to be ruled out from the rest of the primary sleep disorders. This article aims to break with the terminological confusion that encompasses the concept of "insomnia", providing the definitions of the most correct terms to use. This will provide us with good tools for the correct collection of information, which will be of great help for the application of a clinical diagnostic algorithm of "Chronic adult Insomnia disorder". This will be able to differentiate it mainly from the rest of primary sleep disorders, and thus, apply a specific treatment, which will resolved on the basis of the "insomnia complaint" by the patient.