Early stages of Alzheimer’s disease, if treated promptly and correctly, may prevent disease progression and improve symptoms, but they cannot be cured. Patients with Alzheimer’s disease, also known as Alzheimer’s disease, can experience a decline in memory function early on, with a marked decline in near memory and a relative preservation of distant memory. Patients may also experience psychiatric symptoms, such as hallucinations and delusions, and can often forget phone numbers, forget to turn off the gas, forget the names of acquaintances, say the same things over and over, ask the same questions over and over, and so on. As the disease worsens, cognitive dysfunction may occur, and in advanced stages, complete loss of cognitive function may occur, leading to inability to care for oneself, which may eventually lead to the patient being accompanied by others.