Balance Balance
The ability to sit or stand upright without falling over or slumping into a potentially dangerous position. problems are usually a late sign Sign
In medicine a sign is what a physician finds by examining a patient. For example, a patient with the symptom of pain might have signs of a fast heart rate, a pale face, a clammy touch and tenderness. of Alzheimer's disease Alzheimer's disease
A neurological disease that affects memory and behaviour. It is characterized by beta-amyloid plaques and neurofibrillary tangles in the brain. There is no known cause but genetics and lifestyle are thought to play a role.. They are seen earlier in patients who have dementia with Lewy bodies Lewy bodies
Round clumps of protein found in the brain's neurons in many people who experience a neurodegenerative disorder., dementia in relation to Parkinson's disease Parkinson's disease
A progressive, neurodegenerative disease characterized by the death of neurons in the brain. The disease has been linked to a lack of the neurotransmitter dopamine which has consequences such as tremors, speech impediments, movement difficulties, and often dementia later in the course of the disease., Parkinson-like disorders (such as multiple system atrophy Atrophy
The shrinkage of tissue or muscle. or corticobasal degeneration Degeneration
Deterioration, usually of tissue, to a lower or less functional form.), and with some of types of dementia seen in relationship to stroke Stroke

Blood supply to the brain is interrupted, usually by a blood clot. As a result, a portion of the brain can die from not receiving enough blood and oxygen.