Ticks Glossary of Terms

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

Allergic reaction: The hypersensitive response of the immune system of an allergic indiv...

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Allergy: A misguided reaction to foreign substances by the immune system, the body system ...

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American dog tick: The tick most commonly responsible for transmitting R. rickettsii, the ...

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Anaplasmosis: A tick-borne disease of cattle, sheep, and related ruminants caused by a mic...

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Antibiotic: A drug used to treat bacterial infections. Antibiotics have no effect on viral...

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Antigen: A substance that the immune system perceives as being foreign or dangerous. The b...

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Arbovirus: A class of viruses transmitted to humans by arthropods such as mosquitoes and ...

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Babesiosis: An illness caused by the parasite Babesia which is transmitted from ani...

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Bacteria: Single-celled microorganisms that can exist either as independent (free-living) ...

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Bacterial: Of or pertaining to bacteria, as in a bacterial lung infection.

Bacterium: The singular of bacteria.

Borrelia: A group of bacteria that are helical spirochetes of the genus Borrelia. Some spe...

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Bovine: Having to do with cows and cattle, as in bovine spongiform encephalopathy (mad cow...

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

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Cancer: An abnormal growth of cells which tend to proliferate in an uncontrolled way and, ...

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CDC: The Centers for Disease Control and Prevention, the US agency charged with tracking a...

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

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Centers for Disease Control and Prevention: The US agency charged with tracking and invest...

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Chemotherapy: 1. In the original sense, a chemical that binds to and specifically k...

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

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Ehrlichiosis: An acute (abrupt onset) disease, first reported in humans in 1986, due to in...

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

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Encephalitis: Inflammation of the brain, which may be caused by a bacterium, a virus, or a...

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Endemic: A characteristic of a particular population, environment, or region. Examples of ...

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Erythema: Redness of the skin that results from capillary congestion. Erythema can occur w...

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Essential: In medicine, of unknown cause, as in essential hypertension (high blood pressur...

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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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Flu: Flu is a colloquialism for influenza. The flu is an acute respiratory illness caused ...

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Flush: (1) A redness of the skin, typically over the cheeks or neck. A flush is usually ...

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Forceps: An instrument that has two blades and a handle and is used for handling, grasping...

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Fungi: Plural of fungus.

Headache: A pain in the head with the pain being above the eyes or the ears, behind the he...

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HIV: Acronym for the Human Immunodeficiency Virus, the cause of AIDS (acquired immunodefi...

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Hives: A raised, itchy area of skin that may be a sign of an allergic reaction. It can be ...

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Imagery: Both a mental process (as in imagining) and a wide variety of procedures used in...

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Immune: Protected against infection, usually by the presence of antibodies.

Immune response: Any reaction by the immune system. For example, poison ivy can cause an i...

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Immune system: A complex system that is responsible for distinguishing a person from every...

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

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Inflammation: A localized reaction that produces redness, warmth, swelling, and pain as a ...

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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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Itching: An uncomfortable sensation in the skin that feels as if something is crawling on ...

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Lethargy: Abnormal drowsiness, stupor.

Lyme disease: An inflammatory disease that is caused by the bacterium Borrelia burgdorferi...

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Microscope: An optical instrument that augments the power of the eye to see small objects....

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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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Nail: In medicine, there are two types of nails. One is just a plain old metal nail used 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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Nematodes: Roundworms.

Nerve: A bundle of fibers that uses electrical and chemical signals to transmit sensory an...

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Neurotoxin: Any substance that is capable of causing damage to nerves or nerve tissue. For...

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Nymph: A stage in the life cycle of certain arthropods, such as ticks and lice. The nymph ...

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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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Paralysis: Loss of voluntary movement (motor function). Paralysis that affects only one mu...

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Parasite: A plant or an animal organism that lives in or on another and takes its nourishm...

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Parasitic: Having to do with a parasite, as in a parasitic infection; or acting like a par...

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Pathogen: An agent of disease. For example, Bacillus anthracis is the pathogen that causes...

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Pregnant: The state of carrying a developing fetus within the body.

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

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Q fever: An infectious disease due to the bacterium Coxiella burnetii whose symptoms inclu...

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Rash: Breaking out (eruption) of the skin. A rash can be caused by an underlying medical c...

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Relapsing fever: An acute infection with recurrent episodes of fever caused by spirochetes...

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Resistance: Opposition to something, or the ability to withstand something. For example, s...

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Rickettsia: A member of a group of microorganisms that (like viruses) require other living...

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RNA: Ribonucleic acid.

RNA virus: A virus in which the genetic material is RNA. The RNA may be either double- or ...

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Rocky Mountain wood tick: A tick that can transmit R. rickettsii, the agent of Rocky Mount...

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Saliva: a watery secretion in the mouth produced by the salivary glands that aids in the d...

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Shock: In medicine, a critical condition that is brought on by a sudden drop in blood flow...

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Shortness of breath: Difficulty in breathing. Medically referred to as dyspnea. Shortness ...

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Spirochete: A microscopic bacterial organism in the Spirochaeta family that has a worm-lik...

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Spotted fever: Also known as Rocky Mountain spotted fever. An acute febrile (feverish) dis...

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Stage: As regards cancer, the extent of a cancer, especially whether the disease has spre...

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STARI: Southern tick-associated rash illness.

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Substance: 1. Material with particular features.
2. The material that...

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

Tick: A small wingless bloodsucking insect that, along with the mite, belongs to the order...

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Tick bite: A bite from a bloodsucking, parasitic insect that punctures the skin with a sha...

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Tick fever: See: Rocky Mountain spotted fever.

Ticks: Small wingless bloodsucking insects that, along with the mite, belongs to the order...

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Toxicity: The degree to which a substance (a toxin or poison) can harm humans or animals. ...

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Tubes: The "tubes" are medically known as the Fallopian tubes. There are two Fallopian tub...

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Tularemia: A bacterial disease that is caused by infection with the bacterium Francisella ...

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Vector: In medicine, a carrier of disease or of medication. For example, in malaria a mosq...

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Viral: Of or pertaining to a virus. For example, if a person has a viral rash, the rash wa...

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

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White blood cell: One of the cells the body makes to help fight infections. There are seve...

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NIH talks about Ebola on WebMD


Medical Dictionary