Dizziness Glossary of Terms

The following are health and medical definitions of terms that appear in the Dizziness article.

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

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

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Anemia: The condition of having a lower-than-normal number of red blood cells or quantity ...

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Antidepressants: 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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Arteriosclerosis: Hardening and thickening of the walls of the arteries. Arteriosclerosis ...

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Benzodiazepines: A class of drugs that act as tranquilizers and are commonly used in the t...

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Blood pressure: The blood pressure is the pressure of the blood within the arteries. It is...

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Blood sugar: Blood glucose. See also: High blood sugar; Low blood sugar.

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

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Breathing: The process of respiration, during which air is inhaled into the lungs through ...

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Cardiomyopathy: Disease of the heart muscle (myocardium).

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

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Chest: The area of the body located between the neck and the abdomen. The chest contains t...

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Chest pain: Pain in the chest that can be a result of many things, including angina, heart...

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Circulation: In medicine, the movement of fluid through the body in a regular or circuitou...

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Consultant: An individual to whom one refers for expert advice or services. The use of con...

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

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Dehydration: Excessive loss of body water. Diseases of the gastrointestinal tract that cau...

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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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Dizziness: Painless head discomfort with many possible causes including disturbances of ...

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Dysfunction: Difficult function or abnormal function.

Ear: The hearing organ. There are three sections of the ear, according to the anatomy tex...

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ECG: Electrocardiogram.

Electrocardiogram: A recording of the electrical activity of the heart. Abbreviated ECG an...

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Electrolyte: A substance that dissociates into ions in solution and acquires the capacity ...

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Emergency department: The department of a hospital responsible for the provision of medica...

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Endocrine: Pertaining to hormones and the glands that make and secrete them into the blood...

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

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Fever: Although a fever technically is any body temperature above the normal of 98.6 F (37...

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Gland: A group of cells that secrete a substance for use in the body. For example, the thy...

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Heart: The muscle that pumps blood received from veins into arteries throughout the body. ...

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Heart attack: The death of heart muscle due to the loss of blood supply. The loss of bloo...

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Heart disease: Any disorder that affects the heart. Sometimes the term "heart disease" is ...

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Heart muscle: A type of muscle with unique features only found in the heart. The heart mus...

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Heart rate: The number of heartbeats per unit of time, usually per minute. The heart rate ...

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Hemorrhage: Bleeding or the abnormal flow of blood.

High blood pressure: A repeatedly elevated blood pressure exceeding 140 over 90 mmHg. Chro...

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Hyperventilation: Overbreathing. Hyperventilation causes dizziness, lightheadedness, a sen...

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Hypoglycemia: Low blood sugar (glucose). Hypoglycemia may be associated with symptoms such...

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Hypotension: Any blood pressure that is below the normal expected for an individual in a ...

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Hypoxia: A lower-than-normal concentration of oxygen in arterial blood, as opposed to anox...

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Infection: The invasion and multiplication of microorganisms such as bacteria, viruses, an...

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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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Inner ear: A highly complex structure whose essential component for hearing is the membran...

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Insulin: A natural hormone made by the pancreas that controls the level of the sugar gluco...

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Internal bleeding: Bleeding inside the body that is not seen from the outside. Internal bl...

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Intervention: The act of intervening, interfering or interceding with the intent of modify...

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Lightheadedness: A feeling you are "going to faint." Lightheadedness is medically distinc...

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Low blood pressure: Any blood pressure that is below the normal expected for an individua...

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Low blood sugar: A low blood level of the sugar glucose. Also called hypoglycemia.

Menopause: The time in a woman's life when menstrual periods permanently stop; it is also ...

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Metabolic: Relating to metabolism, the whole range of biochemical processes that occur wit...

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Motion sickness: A disorder of the sense of balance and equilibrium and, hence, the sense ...

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

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Nausea: Stomach queasiness, the urge to vomit. Nausea can be brought on by many causes, in...

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Neuropathy: Any disease or malfunction of the nerves.

Orthostatic hypotension: A temporary lowering of blood pressure, usually related to sudden...

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Oxygen: The odorless gas that is present in the air and necessary to maintain life. Oxygen...

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Pain: An unpleasant sensation that can range from mild, localized discomfort to agony. Pa...

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Palpitations: Unpleasant sensations of irregular and/or forceful beating of the heart. In ...

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Panic: A sudden strong feeling of fear that prevents reasonable thought or action. The wor...

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Panic disorder: An anxiety disorder that is characterized by sudden attacks of fear and pa...

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Pituitary: 1. As an adjective, pertaining to the pituitary gland or its hormonal se...

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Pituitary gland: The main endocrine gland. It is a small structure in the head. It is ca...

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

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Progressive: Increasing in scope or severity, advancing, or going forward. For example, a ...

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Psychiatric: Pertaining to or within the purview of psychiatry, the medical specialty conc...

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Red blood cell: The blood cell that carries oxygen. Red cells contain hemoglobin and it is...

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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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Sensation: In medicine and physiology, sensation refers to the registration of an incoming...

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Sinusitis: Inflammation of the lining membrane in any of the hollow areas (sinuses) of the...

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Somatization: The normal, unconscious process by which psychological distress is expressed...

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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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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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Syncope: Partial or complete loss of consciousness with interruption of awareness of one...

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

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Tired: A feeling of a lessened capacity for work and reduced efficiency of accomplishment,...

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Tiredness: See: Tired.

Transfusion: The transfer of blood or blood products from one person (the donor) into the ...

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Trigger: Something that either sets off a disease in people who are genetically predispose...

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Tumor: An abnormal mass of tissue. Tumors are a classic sign of inflammation, and can be ...

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Vasovagal syncope: The temporary loss of consciousness in a particular kind of situation ...

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Vertigo: Aside from being the name of a classic 1958 Alfred Hitchcock film (with Jimmy St...

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