Description
Neurocognitive Disorder (NCD) encompasses acquired decline from a previous level of cognitive performance in one or more domains (complex attention, executive function, learning and memory, language, perceptual–motor, or social cognition). ‘Major’ NCD interferes with independence in instrumental/basic activities of daily living; ‘Mild’ NCD reflects measurable decline without loss of independence. Etiologies include degenerative, vascular, infectious, traumatic, substance/medication-induced, autoimmune/metabolic, and mixed causes.