Subjective Cognitive Impairment and Mild Cognitive Impairment (Predementias)
Alzheimer disease is thought to have an insidious progression, with asymptomatic brain changes occurring decades prior to formal diagnosis. In recent years, efforts have been made to identify and characterize these changes into a spectrum beginning with subjective cognitive decline through the development of major neurocognitive disorder. Through this process, progress has been made into the predictive factors, prevention, and treatment modalities for the various stages of cognitive decline. In addition to pharmacologic therapies, studies have shown the value in physical, mental, social, and spiritual activity combined with support from physicians, family, and caregivers. Furthermore, individualized care, open and honest physician-patient dialogue, and emphasis on lifestyle modifications have been shown to achieve optimal quality of life and may also decrease the rate of cognitive decline. This review contains 5 figures, 5 tables, and 36 references. Key words: age-related cognitive decline, Alzheimer disease, major neurocognitive disorder, mild cognitive impairment, mild neurocognitive disorder, senior moment, subjective cognitive impairment