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10.4 Neurology
Diseases and Conditions of the Nervous System
Term | Definition |
---|---|
hydrocephalus | abnormal accumulation of fluid (csf) in the brain |
spina bifida | congenital defects in the lumber spinal column caused by imperfect union of vertebral parts (neural tube defect). |
Alzheimer disease | brain disorder marked by gradual and progressive mental deterioration (dementia) with personality changes and impairment of daily functioning. |
amyotrophic lateral schlerosis (ALS) | Degenerative disorder of motor neurons on the spinal cord and brainstem. Also known as Lou Gehrig's disease. |
epilepsy | Chronic brain disorder characterized by recurrent seizure activity.Convulsions are preceded by an aura, which is a peculiar sensation before the onset of seizure. |
Huntington disease | hereditary disorder marked by degenerative changes in the cerebrum leading to abrupt involuntary movements and mental deterioration. |
multiple sclerosis | destruction of the mylin sheath on neurons in the cns and its replacement by plagues of sclerotic (hard) tissue. |
myasthenia gravis (mg) | A chronic autoimmune neuromuscular disorder characterized by weakness (-asthenia) of voluntary muscles (attached to bones). |
palsy | paralysis (partial or complete loss of motor function). |
parkinson disease (parkinsonism) | degeneration of neurons in the basal ganglia, occurring in later life and leading to tremor, weakness of muscles, and slowness of movement. |
tourette syndrome | involuntary, spasmodic, twitching movements, uncontrollable vocal sounds; and inapropriate words. |
herpes zoster (shingles) | viral infection affecting peripheral nerves. |
meningitis | inflammation of the meninges; leptomeningitis. |
human immunodeficiency virus (HIV) encephalopathy | Brain disease and dementia occurring with AIDS. |
brain tumor | abnormal growth of brain tissue and meninges. |
cerebal concussion | temporary brain dysfunction (brief loss of consciousness) after injury usually clearing within 24 hours. |
cerebal contusion | bruising of brain tissue as a result of direct trauma to the head; neurologic deficits persist longer then 24 hours. |
cerebrovascular accident | Disruption in the normal blood supply to the brain; stroke. |