[Clinical assessment and diagnostic tools].

The presence of cognitive impairment generates important changes in both affected individuals and their families and the health staff who must provide adequate care. Early identification of this alteration allows appropriate diagnosis and treatment and psychosocial and educational support, as well as the possibility of establishing care, life and financial plans. The interest of the scientific community in age-related cognitive alterations is demonstrated by the abundance of criteria and classifications. Obviously, there is a need to unify these criteria and implement longitudinal studies in order to reach reliable conclusions. Clinical assessment of the distinct cognitive domains should include careful history-taking and the use of diagnostic neuropsychological batteries. First, the ideal screening test would be one that could be administered in a few minutes, with a cut-off point that would identify patients requiring further assessment for correct diagnosis. The use of dynamic biomarkers is based on the hypothesis that they have a specific time-dependent model. These biomarkers include, firstly, markers of amyloidosis and, secondly, markers of neurodegeneration. Cognitive frailty is an emerging term inspired by a potential parallel with physical frailty syndrome. A subgroup of patients with cognitive impairment show a reduced capacity for recovery and functional decline that interact with physical frailty. The evidence suggests that cognitive status represents an important dimension of frailty syndrome.