neurodegenerative disease
Progressive disorder characterized by the gradual loss of structure or function of neurons, leading to cognitive or motor decline.
Full Definition
Neurodegenerative diseases represent a group of progressive disorders in which neurons in specific brain regions gradually lose function and ultimately die. These conditions are characterized by the accumulation of misfolded proteins, oxidative stress, mitochondrial dysfunction, and inflammation. Common examples include Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis. The progressive nature of these diseases typically leads to worsening cognitive, motor, or behavioral symptoms over time, and most lack effective disease-modifying treatments.
Usage
Usage note: Hyphenate when used as a compound adjective; plural form is 'neurodegenerative diseases.'
In Context
- "Early detection biomarkers for neurodegenerative disease are being investigated to enable intervention before significant neuronal loss occurs." — Biomarker research proposal
- "The pathophysiology of neurodegenerative disease involves complex interactions between genetic susceptibility and environmental factors." — Medical school lecture notes