Parkinson Disease Dementia Glossary of Terms

The following are health and medical definitions of terms that appear in the Parkinson Disease Dementia article.

Absorption: Uptake. For example, intestinal absorption is the uptake of food (or other sub...

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Acetylcholine: A neurotransmitter released by nerves that is essential for communication b...

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Alpha-synuclein: One in a family of structurally related proteins that are prominently exp...

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Alzheimer's disease: A progressive degenerative disease of the brain that leads to dementi...

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Anticholinergic: Opposing the actions of the neurotransmitter acetylcholine. Anticholinerg...

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Antidepressant: Anything, and especially a drug, used to prevent or treat depression.

Anxiety: A feeling of apprehension and fear, characterized by physical symptoms such as pa...

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Arms: An appendage in anatomy and in clinical trials. See: Arm.

Atypical: Unusual, or not fitting a single diagnostic
category.

Autopsy: A postmortem examination. Also known as necropsy.

Brain: The portion of the central nervous system that is located within the skull. It func...

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Cardiovascular: Relating to the circulatory system, which comprises the heart and blood ve...

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Cardiovascular disease: Disease affecting the heart or blood vessels.

Cell: The basic structural and functional unit of any living thing. Each cell is a small c...

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Cognition: The process of knowing. Cognition includes both awareness and judgment.

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Cognitive: Having to do with thought, judgment, or knowledge.

Contrast: Short for "contrast media." Contrast media are X-ray dyes used to provide contra...

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CT scan: Computed tomography scan. Detailed images of internal organs are obtained by this...

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Cure: 1. To heal, to make well, to restore to good health. 2. A time withou...

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Dementia: Significant loss of intellectual abilities, such as memory capacity, that is sev...

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Depression: An illness that involves the body, mood, and thoughts and that affects the way...

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Diagnosis: 1 The nature of a disease; the identification of an illness. 2 A ...

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Dopamine: An important neurotransmitter (messenger) in the brain.

Dysfunction: Difficult function or abnormal function.

Exacerbate: To make worse. For example, smoking may exacerbate lung disease.

Fatigue: A condition characterized by a lessened capacity for work and reduced efficiency ...

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Gene: The basic biological unit of heredity. A segment of deoxyribonucleic acid (DNA) need...

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Genes: The basic biological units of heredity. Segments of deoxyribonucleic acid (DNA) nee...

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Genetic: Having to do with genes and genetic
information.

Indicate: In medicine, to make a treatment or procedure advisable because of a particular ...

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Insertion: A chromosome abnormality that is due to insertion of a segment from one chromos...

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Insomnia: The perception or complaint of inadequate or poor-quality sleep due to a number ...

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Jaw: The movable junction of the bones below the mouth (the mandible) and the bone just ab...

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Lethargy: Abnormal drowsiness, stupor.

Long-term memory: A system for permanently storing, managing, and retrieving information f...

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Manic: In a state of mania.

Memory: 1. The ability to recover information about past events or knowledge. ...

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Metabolism: The whole range of biochemical processes that occur within a living organism. ...

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Mild cognitive impairment: Abbreviated MCI. A brain disorder in which thinking abilities a...

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Mitochondrial: Referring to mitochondria.

Motor: Something that produces or refers to motion. For example, a motor neuron is a nerve...

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MRI: Magnetic resonance imaging.

Muscle: Muscle is the tissue of the body which primarily functions as a source of power. T...

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Neurotransmitter: A chemical that is released from a nerve cell which thereby transmits an...

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Onset: In medicine, the first appearance of the signs or symptoms of an illness as, for ex...

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Parkinson's disease: A slowly progressive neurologic disease that is characterized by a fi...

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Physical therapy: A branch of rehabilitative health that uses specially designed exercises...

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Posture: The carriage of the body as a whole, the attitude of the body, or the position of...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Protein: One of the three nutrients used as energy sources (calories) by the body. Protein...

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Psychiatrist: A physician who specializes in the prevention, diagnosis, and treatment of m...

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Psychosis: In the general sense, a mental illness that markedly interferes with a person'...

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Receptor: 1. In cell biology, a structure on the surface of a cell (or inside a cel...

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Reuptake: The reabsorption of a secreted substance by the cell that originally produced an...

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Scan: As a noun, the data or image obtained from the examination of organs or regions of...

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Serotonin: A neurotransmitter that is involved in the transmission of nerve impulses. Sero...

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Sleep: The body's rest cycle.

Stress: In a medical or biological context stress is a physical, mental, or emotional fact...

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Surgery: The branch of medicine that employs operations in the treatment of disease or inj...

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Symptom: Any subjective evidence of disease. In contrast, a sign is objective. Blood comin...

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Tension: 1) The pressure within a vessel, such as blood pressure: the pressure within t...

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Therapy: The treatment of disease. Therapy is synonymous with treatment.

Tremor: An abnormal, repetitive shaking movement of the body. Tremors have many causes and...

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Vascular: Relating to blood vessels. For example, the vascular system in the body includes...

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Virus: A microorganism that is smaller than a bacterium that cannot grow or reproduce apar...

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Viruses: Small living particles that can infect cells and change how the cells function. I...

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