wheal response

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• Wheal — Infobox Symptom Name = PAGENAME Background = Caption = A welt (wheal) formed on a person s skin after being struck on the neck with a credit card ICD10 = ICD10|L|50|9|l|50 ICD9 = ICD9|708 ICDO = OMIM = DiseasesDB = 13606 MedlinePlus = 000845… …   Wikipedia

• wheal and erythema reaction — wheal and flare reaction the characteristic local cutaneous reaction consisting of an elevated, blanched wheal surrounded by a spreading “flare” of erythema that occurs within a few minutes at the site of a minor nonpenetrating skin injury… …   Medical dictionary

• Wheal — A raised, itchy (pruritic) area of skin that is almost always an overt sign of allergy. Not all wheals are alike. They may be redder or paler than the skin around them. They may vary in configuration and may be rounded or flat topped. Wheals… …   Medical dictionary

• response — 1. The reaction of a muscle, nerve, gland, or other excitable tissue to a stimulus. 2. Any act or behavior, or its constituents, that a living organism is capable of emitting. Reflexes are usually excluded because they are typically elicited by a …   Medical dictionary

• wheal —    An inflammatory response to mild skin irritation, with a well defined, raised redness, lasting for perhaps an hour and then disappearing. The cause is usually atopic allergies in an IgE excess person, although mild, subclinical adrenocortical… …   Herbal-medical glossary

• triple response — of Lewis a physiologic reaction of the skin to stroking with a blunt instrument: first a red line develops at the site of stroking, owing to the release of histamine or a histaminelike substance, then a flare develops around the red line due to… …   Medical dictionary

• reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

• Allergy — Classification and external resources Hives are a common allergic symptom. ICD 10 T78.4 …   Wikipedia

• Skin allergy test — Skin allergy testing is a method for medical diagnosis of allergies that attempts to provoke a small, controlled, allergic response. A microscopic amount of an allergen is introduced to a patient s skin by various means:* by pricking the skin… …   Wikipedia

• immune system disorder — Introduction        Disorders of the immune systemany of various failures in the body s defense mechanisms against infectious organisms (see table (Disorders of the immune system)). Disorders of immunity include immune deficiency diseases, such… …   Universalium

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary