Final answer:
Severe cognitive decline, especially in Alzheimer's Disease, involves significant forgetfulness and the inability to recognize family or conduct daily activities. It leads to complete dependence on others for care, and in the final stages, loss of basic bodily functions. Treatments focus on managing symptoms and interventions to slow progression.
Step-by-step explanation:
Severe cognitive decline, or moderately severe dementia, is characterized by significant impairment in cognitive functions. In the context of Alzheimer's Disease (AD), a person with severe cognitive decline may experience disruptive memory loss, such that they may no longer recognize their own family members. They could also struggle with basic activities of daily living, such as dressing themselves, and may exhibit behavioral changes such as agitation or inappropriate behaviors.
Increased memory problems are accompanied by deterioration in language, problem-solving, and other cognitive abilities to the point where independent living is no longer possible, making the person fully dependent on others for care. Physical complications such as losing bladder and bowel control or problems with swallowing can occur, significantly affecting the person's health and quality of life. Ultimately, the progression of AD and the accumulation of plaques and tangles within the brain lead to severe disability and, finally, death.
While there is currently no cure for AD, some treatments and interventions such as cognitive rehabilitation, which may involve methods like virtual reality, can help manage symptoms. Also, lifestyle factors like diet have been associated with a reduced risk of progression from mild cognitive impairment to more severe stages of dementia.