Contact Dermatitis Glossary of Terms

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

Allergen: A substance that can cause an allergic reaction. Common allergens include ragwee...

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

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

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Antibody: An immunoglobulin, a specialized immune protein, produced because of the introdu...

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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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Atopic: A predisposition toward developing certain allergic hypersensitivity reactions. At...

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Atopic dermatitis: A skin disease characterized by areas of severe itching, redness, scali...

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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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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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Dermatitis: Inflammation of the skin, either due to an inherent skin defect, direct contac...

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Dermatologist: A physician who specializes in the diagnosis and treatment of skin problems...

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

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Eczema (dermatitis): A particular type of inflammatory reaction of the skin in which there...

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

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

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Irritant contact dermatitis: A rash brought about by constant irritation from a substance....

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

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Molecule: The smallest unit of a substance that can exist alone and retain the character o...

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Nickel: A silver-white metallic element. Long-term exposure to nickel, such as from jewelr...

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Ointment: An oil-based preparation that is applied to the skin. Whereas an ointment has an...

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

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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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Recur: To occur again; to return. For example, a symptom, sign, or disease can recur.

Steroid: One of a large group of chemical substances classified by a specific carbon struc...

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

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

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

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Urticaria: Another name for hives. Raised, itchy areas of skin that are usually a sign of ...

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Vesicles: In dermatology, vesicles are small blisters, most often on the skin. Vesicles al...

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