Skip to content

    Alzheimer's Disease Health Center

    Select An Article

    Types of Dementia

    (continued)
    Font Size
    A
    A
    A

    Parkinson's Disease Dementia

    People with the nervous system disorder Parkinson's disease get this type of dementia about 50% to 80% of the time. On average, the symptoms of dementia develop about 10 years after a person first gets Parkinson's.

    This type is very similar to DLB. They have the same symptoms, and people with both conditions have signs of Lewy bodies in their brains.

    Mixed Dementia

    This is a combination of two types of dementia. The most common combination is Alzheimer's disease and vascular dementia.

    Frontotemporal Dementia (FTD)

    If your loved one has an FTD, he's developed cell damage in areas of the brain that control planning, judgment, emotions, speech, and movement.

    Someone with FTD may have:

    • Personality and behavior changes
    • Sudden lack of inhibitions in personal and social situations
    • Problems coming up with the right words for things when speaking
    • Movement problems, such as shakiness, balance problems, and muscle spasms

    Huntington's Disease

    This is a brain disorder caused by a genetic defect that's passed down through family members. While your loved one might have the gene for Huntington's disease at birth, the symptoms don’t usually start to show up until he's between the ages of 30 and 50.

    People with Huntington's get some of the same symptoms seen in other forms of dementia, including problems with:

    • Thinking and reasoning
    • Memory
    • Judgment
    • Planning and organizing
    • Concentration

    Creutzfeldt-Jakob Disease

    This is a rare condition in which proteins called prions cause normal proteins in the brain to start folding into abnormal shapes. The damage leads to dementia symptoms that happen suddenly and quickly get worse.

    Your loved one might have:

    • Memory and concentration problems
    • Poor judgment
    • Confusion
    • Mood swings
    • Depression
    • Sleep problems
    • Twitching or jerky muscles
    • Trouble walking

    Normal Pressure Hydrocephalus

    This type of dementia is caused by a buildup of fluid in the brain. The symptoms include problems walking, trouble thinking and concentrating, and personality and behavior changes.

    Some symptoms can be treated by draining the extra fluid from the brain into the abdomen through a long, thin tube, called a shunt.

    Next Article:

    Today on WebMD

    Remember your finger
    When it’s more than just forgetfulness.
    man eating potato chips close up
    These may harm your cognition.
     
    senior man
    Common symptoms to look for.
    mri scan of human brain
    Can drinking red wine reverse the disease?
     
    Checklist
    ARTICLE
    eating blueberries
    ARTICLE
     
    clock
    Article
    Colored mri of brain
    ARTICLE
     
    Human brain graphic
    ARTICLE
    mature woman
    ARTICLE
     
    Woman comforting ailing mother
    ARTICLE
    Senior woman with serious expression
    ARTICLE