In layman’s words dementia means loss of memory. Actually in dementia a patient’s memory, thinking ability, communication skills (to understand language and make others understand) and behavior are affected. Patient’s speech, behavior and characteristics as an individual changes considerably. Since intelligence is affected many questions arise.
There can be many causes of dementia. In about 80% of the patients the cause is Alzheimer’s disease or vascular dementia. In addition to that, Lewybodies disease, CreutzfeldtJakob disease, Huntington’s disease, Sub cortical Leucoencephalopathy, A.L.S etc also have symptoms of dementia. Amongst the other causes of dementia are diseases of thyroid, parathyroid, diabetes, effect of toxic chemicals, and heavy metals etc. Thus there are many causes of dementia.
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