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Degenerative disease is the result of a continuous process based on degenerative cell changes, affecting tissues or organs, which will increasingly deteriorate over time. [ 1 ] In neurodegenerative diseases , cells of the central nervous system stop working or die via neurodegeneration .
Alzheimer's disease (AD) is a chronic neurodegenerative disease that results in the loss of neurons and synapses in the cerebral cortex and certain subcortical structures, resulting in gross atrophy of the temporal lobe, parietal lobe, and parts of the frontal cortex and cingulate gyrus. [14]
Degeneration is deterioration in the medical sense.Generally, it is the change from a higher to a lower form. More specifically, it is the change of tissue to a lower or less functionally active form.
Osteoarthritis (OA) is a type of degenerative joint disease that results from breakdown of joint cartilage and underlying bone. [5] [6] It is believed to be the fourth leading cause of disability in the world, affecting 1 in 7 adults in the United States alone. [7]
Parkinson's disease, or simply Parkinson's, [28] is a long-term degenerative disorder of the central nervous system that mainly affects the motor system. The disease has many complications, including anxiety, dementia, and depression. [29] Parkinson's disease typically occurs in people over the age of 60, of whom about one percent are affected.
Corticobasal degeneration (CBD) is a rare neurodegenerative disease involving the cerebral cortex and the basal ganglia. [1] CBD symptoms typically begin in people from 50 to 70 years of age, and typical survival before death is eight years.
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Dementia with Lewy bodies (DLB) is a type of dementia, a group of diseases involving progressive neurodegeneration of the central nervous system. [11] It is one of the two Lewy body dementias, along with Parkinson's disease dementia.