In simple words: Alzheimer's is a brain disease that slowly gets worse over time. It causes problems with memory, thinking, and behavior. The most common early symptom is trouble remembering recently learned information.

Alzheimer's disease (AD), including presenile and senile AD, refers to a gradual, progressive, irreversible neurodegenerative brain disorder characterized by dementia (loss of memory and cognitive function) that affects an individual’s personal, social, and occupational life.It is characterized by the formation of amyloid plaques and neurofibrillary tangles in the brain, leading to neuronal damage and brain shrinkage.

Example 1: A 70-year-old patient presents with progressive memory loss, difficulty with daily tasks, and changes in personality. After a thorough evaluation, including cognitive testing and imaging, a diagnosis of Alzheimer's disease is made., A 55-year-old patient exhibits early-onset memory problems and cognitive decline. Genetic testing and family history reveal a predisposition to Alzheimer's disease, confirming the diagnosis., An 80-year-old patient with existing dementia experiences a sudden worsening of confusion and disorientation.While delirium is suspected, underlying Alzheimer's disease contributes to the overall clinical picture.

Documentation should include detailed medical history, cognitive assessments (e.g., Mini-Mental State Examination), neurological examination findings, results of laboratory and imaging studies (if performed), and a comprehensive description of the patient's cognitive and behavioral symptoms.