Hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral nervous system structures.

Synonyms: Degenerative Condition, Neurologic, Nervous System Degenerative Diseases, Degenerative Neurologic Disorder, Neurodegenerative Diseases, Degenerative Diseases, Spinal Cord, Neurologic Disorder, Degenerative, Neurologic Degenerative Diseases, Neurologic Diseases, Degenerative, Degenerative Neurologic Disease, Degenerative Conditions, Neurologic, Degenerative Neurologic Diseases, Neurologic Degenerative Disease, Neurodegenerative Disease, Degenerative Neurologic Disorders, Degenerative Diseases, Central Nervous System, Neurologic Disorders, Degenerative, Degenerative Diseases, Nervous System, Neurologic Degenerative Conditions, Neurologic Degenerative Condition, Neurodegenerative Disorder, Degenerative Diseases, Neurologic, Neurodegenerative Disorders, Neurologic Disease, Degenerative