Poison Ivy, Oak, and Sumac Glossary of Terms

The following are health and medical definitions of terms that appear in the Poison Ivy, Oak, and Sumac article.

Airway: The path that air follows to get into and out of the lungs. The mouth and nose are...

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Allergic contact dermatitis: A red, itchy, weepy reaction where the skin has come into con...

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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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Anaphylaxis: Allergic reaction. In severe cases, this can include potentially deadly anap...

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Antihistamines: Drugs that combat the histamine released during an allergic reaction by bl...

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Asthma: A common lung disorder in which inflammation causes the bronchi to swell and narro...

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Blister: A collection of fluid underneath the top layer of skin (epidermis). There are man...

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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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Bumps: The raised area of a bump or bruise results from blood leaking from these injured b...

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Calamine: An astringent made from zinc carbonate or zinc oxide, customarily used in lotion...

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Cluster: In epidemiology, an aggregation of cases of a disease or another health-related c...

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Contact dermatitis: A skin condition caused by contact between skin and some substance. In...

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Corticosteroid: Any of the steroid hormones made by the outer portion (cortex) of the adre...

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CPR: Cardiopulmonary resuscitation.

Dermatitis: Inflammation of the skin, either due to direct contact with an irritating sub...

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Dermatology: 1. The branch of medicine concerned with the diagnosis, treatment, and...

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

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Dilate: To stretch or enlarge. Also known as dilatate.

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

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Epinephrine: A substance produced by the medulla (inside) of the adrenal gland. The name e...

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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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Immunology: The study of all aspects of the immune system, including its structure and fun...

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

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

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Internal medicine: The medical specialty dedicated to the diagnosis and medical treatment ...

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

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Medical history: 1. In clinical medicine, the patient's past and present which may ...

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Mouth: 1. The upper opening of the digestive tract, beginning with the lips and con...

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

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Pharmacy: A location where prescription medications are sold. A pharmacy is constantly sup...

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Poison: Any substance that can cause severe organ damage or death if ingested, breathed in...

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Poison ivy: Skin inflammation that results from contact with the poison ivy vine. Chemical...

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Poison oak: Skin inflammation that results from contact with the poison oak plant. Chemica...

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Prescription: A physician's order for the preparation and administration of a drug or dev...

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Prescription drug: A drug requiring a prescription, as opposed to an over-the-counter dr...

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Pulse: The rhythmic dilation of an artery that results from beating of the heart. Pulse is...

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Pus: A thick, whitish-yellow fluid that results from the accumulation of white blood cells...

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

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Throat: The throat is the anterior (front) portion of the neck beginning at the back of th...

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Topical: Pertaining to a particular surface area. For example, a topical agent is applied ...

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Unconscious: 1. Interruption of awareness of oneself and one's surroundings, lack ...

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Wheezing: A whistling noise in the chest during breathing. Wheezing occurs when the airway...

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