FAGAL | Federación Alzhéimer Galicia

Other diseases that can cause dementia

Parkinson's disease 

Dementia associated with Parkinson's disease is a thinking and reasoning impairment suffered by people diagnosed with Parkinson’s disease. Today, the number of affected people range between 24 and 31% of all the people diagnosed with Parkinson’s disease (Aarsland, Zaccai, Brayne, 2005).

Dementia symptoms have to show after a period of one to five years after the Parkinson’s disease diagnosis so it can be considered dementia. The difference with Alzheimer’s dementia is that attention impairment, deterioration of visual processing abilities and executive function impairment, that is to say, difficulties to regulate their behavior and make a plan day by day are predominant in Parkinson’s dementia.


Creutzfeldt-Jakob disease

It’s a rare degenerative inherited brain disorder. Symptoms usually show around the age of 60. Most common symptoms are dementia, behavior change, vision problems and poor muscle coordination. It may also show signs of muscle stiffness and tremors.


Dementias caused by infections: 

  • AIDS dementia complex
  • Progressive encephalopathy
  • Cryptococcosis
  • Neurosyphilis
  • Herpesviral encephalitis
  • Lyme disease