Alzheimer's is a degenerative disease of the brain, which usually implies a slow progression. However, Alzheimer's sometimes progresses rapidly — over weeks or months instead of years — but this is uncommon. Click here to view the full reply on Mayo Clinic.
A rapid progression may also suggest that a second type of dementia is complicating the Alzheimer's — such as vascular dementia or Lewy body disease. In addition, rapid progression may indicate another condition that mimics the symptoms of Alzheimer's, such as:
■ Steroid responsive encephalopathy associated with autoimmune thyroiditis
■ Conditions related to autoimmune diseases or to cancer, such as paraneoplastic limbic encephalitis
■ Infections that affect the central nervous system, such as HIV and Creutzfeldt-Jakob disease
■ A side effect of certain medications, such as anticholinergic drugs and narcotic pain relievers
■ Vitamin B-12 deficiency
Seek a prompt and thorough medical evalu...
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