Stages of Alzheimer’s Disease


Alzheimer’s disease can range from mild to severe as per the severity of sign & symptoms. The scale ranges from a state of mild impairment, through to moderate impairment, before eventually reaching severe cognitive decline.

Mild Alzheimer’s disease :

People with mild Alzheimer’s disease develop memory problems and cognitive difficulties that may include the following:

    • Taking longer than usual to perform daily tasks.
    • Difficulty handling money or paying the bills.
    • While performing fine motor tasks such as writing, drawing, or dressing, certain movement coordination and planning difficulties may be present.
    • Wandering and getting lost.
    • Experiencing personality and behavior changes, such as getting upset or angry more easily, hiding things, or pacing.
    • Difficulties with language. Language problems are mainly characterized by a shrinking vocabulary and decreased word fluency, leading to a general impoverishment of oral and written language

Moderate Alzheimer’s disease :

In moderate Alzheimer’s disease, the parts of the brain responsible for language, senses, reasoning, and consciousness are damaged. This can lead to the following symptoms:

    • Greater memory loss and confusion.
    • Speech difficulties become evident (inability to recall vocabulary, which leads paraphasias)
    • Reading and writing skills are progressively lost.
    • Difficulty recognizing friends or family.
    • An inability to learn new things.
    • Difficulty performing tasks with several stages, such as getting dressed
    • Difficulty coping with new situations
    • Impulsive behavior
    • Hallucinations, delusions, or paranoia.

Severe Alzheimer’s disease :

In severe Alzheimer’s disease, plaques and tangles are present throughout the brain, causing the brain tissue to shrink substantially. This can lead to:

    • An inability to communicate. Language is reduced to simple phrases or even single words, eventually leading to complete loss of speech.
    • Extreme apathy, exhaustion and aggressiveness can still be present.
    • Muscle mass and mobility deteriorates.
    • Dependency on others for care.
    • Being unable to leave bed all or most of the time.

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