Middle Stage - Moderate Dementia:
As the disease progresses through the cerebral cortex, judgment diminishes, emotional outbursts may occur, and language is impaired. Changes in behavior, such as agitation and wandering, become more noticeable. Memory lapses become more obvious, and symptoms may include wandering, repeating words, neglecting personal hygiene, losing track of time, forgetting names, and increased irritability
Last Stage - Severe Dementia:
Patients may lose the ability to recognize faces, communicate effectively, and control bodily functions. Constant care, including assistance with bathing, using the bathroom, dressing, and eating, becomes necessary. Speech may be difficult to understand, and comprehension of spoken language may be limited. On average, the disease lasts 8 to 10 years, but individuals can live up to 20 years with Alzheimer's.