Apathy or inertia refers to a lack of interest, enthusiasm, or concern, often manifested as an inability to initiate or engage in activities. This phenomenon is significant in the context of cognitive impairments, where individuals may exhibit diminished motivation and responsiveness, affecting their daily functioning and quality of life. Understanding apathy or inertia is crucial for identifying and addressing the challenges faced by individuals with cognitive disorders, including those experiencing sudden changes in mental status or progressive decline in cognitive abilities.