The complications of Alzheimer's disease primarily manifest as symptoms of systemic illnesses, such as pulmonary infections, urinary tract infections, pressure ulcers, and general systemic failure. These complications typically occur in the advanced stages of Alzheimer's, and ultimately, patients may succumb to these complications. In severe cases, patients not only experience worsening memory impairment but also exhibit emotional apathy, inappropriate laughter or crying, loss of speech, and an inability to perform simple daily tasks like dressing or eating. They may remain bedridden, silent, and develop rigid or flexed paralysis in their limbs, along with sphincter dysfunction. Prolonged bed confinement can lead to a series of complications.