Neuroscience In Action:
Mechanisms Behind Alzheimer's Disease
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Purpose
Background
How Alzheimer's Disease Affects the Brain
Main Characteristics of Alzheimer's
Causes and Risk Factors
Types of AD
Stages of AD
Stage 1: Preclinical Stage
Stage 2: Early Stage
Stage 3: Early Stage
Stage 4: Early Stage
Stage 5: Moderate Stage
Stage 6: Moderate Stage
Stage 7: Final Stage
Treatments
Sources
Stage 1: Preclinical Stage
Description
A newly defined stage reflecting current evidence that measurable biomarker changes in the brain may occur years before symptoms affecting memory, thinking or behavior can be detected by affected individuals or their physicians.
Symptoms
Normal brain function - no impairment
Stage 2