RAG Files/Alzheimer's Disease - Signs and Symptoms.txt

The course of Alzheimer's is generally described in three stages, with a progressive pattern of cognitive and functional impairment.[24][17] The three stages are described as early or mild, middle or moderate, and late or severe.[24] The disease is known to target the hippocampus which is associated with memory, and this is responsible for the first symptoms of memory impairment. As the disease progresses so does the degree of memory impairment.[15]