Possible Early Dementia Glossary of Terms

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

Abnormal: Outside the expected norm, or uncharacteristic of a particular patient.

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

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Aging: The process of becoming older, a process that is genetically determined and environ...

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

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Amnesia: An impairment to or lack of memory. Antegrade amnesia refers to a lack of memory ...

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

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Benign: Not malignant. A benign tumor is one that does not invade surrounding tissue or sp...

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

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

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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Enzyme: Proteins that speeds up the rate of a chemical reaction in a living organism. An e...

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Head injury: Damage to any of the structures of the head as a result of trauma. While the ...

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Hormone: A chemical substance produced in the body that controls and regulates the activit...

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Injury: Harm or hurt. To harm, hurt, or wound. The word injure may be in physical or emot...

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Laboratory: A place for doing tests and research procedures, and for preparing chemicals a...

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Lateral: 1. In anatomy, the side of the body or a body part that is farther from th...

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Liver: The largest solid organ in the body, situated in the upper part of the abdomen on t...

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

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

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MRI: Magnetic resonance imaging.

Multi-infarct dementia: Dementia that is brought on by a series of strokes.

Muscular: Having to do with the muscles. Also, endowed with above average muscle developme...

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Muscular dystrophy: One of a group of genetic diseases characterized by progressive weakne...

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Neurological: Having to do with the nerves or the nervous system as, for example, a neurol...

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Neurologist: A physician who specializes in the diagnosis and treatment of disorders of th...

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

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Parkinson disease: A slowly progressive neurologic disease characterized by a fixed inexpr...

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Proteins: Large molecules composed of one or more chains of amino acids in a specific orde...

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

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Psychiatry: The medical specialty that is concerned with the prevention, diagnosis, and tr...

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Referral: The recommendation of a medical or paramedical professional. If you get a refer...

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Rule out: Term used in medicine, meaning to eliminate or exclude something from considera...

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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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Sclerosis: Localized hardening of skin. Sclerosis is generally caused by underlying diseas...

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Short-term memory: A system for temporarily storing and managing information required to ...

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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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Stroke: The sudden death of brain cells due to lack of oxygen, caused by blockage of blood...

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

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Thyroid: 1. The thyroid gland. Also, pertaining to the thyroid gland. 2. A p...

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