Alzheimer’s disease is a degenerative condition that gradually deteriorates over a period of several years. To better understand the development of the disease, experts have categorized it into stages. While there are varying interpretations, the most commonly used classification includes seven stages, although some experts simplify it to three: mild, moderate, and severe. Determining the precise stage can be challenging due to the overlapping symptoms experienced by individuals. However, this breakdown serves as a helpful framework to track the progression of the disease.
Advancing Through the Phases
The speed at which an individual progresses through the stages of Alzheimer’s disease can vary from person to person. The symptoms manifest gradually and not all individuals experience every symptom. Typically, individuals diagnosed with Alzheimer’s live between four to eight years after diagnosis. However, the length of time can vary significantly based on overall health and other influencing factors.
Stage One: Preclinical or No Impairment
In the initial stage of Alzheimer’s disease, known as the preclinical or no impairment stage, the symptoms are not yet noticeable. During this phase, individuals can still function independently and are often unaware that they have the disease. This stage can last for several years or even decades before any signs of the disease become apparent. It is possible for individuals with preclinical Alzheimer’s to maintain their independence as long as there are no other factors hindering their ability to do so.