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Related to rash: heat rash, Viral rash


nonspecific term for an eruption of the skinskin,
the flexible tissue (integument) enclosing the body of vertebrate animals. In humans and other mammals, the skin operates a complex organ of numerous structures (sometimes called the integumentary system) serving vital protective and metabolic functions.
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. It may result from skin allergy, skin irritation, or skin disease, or it may be a symptom of a systemic disease like measles, smallpox, or scarlet fever. A rash may appear as discolored spots or a general redness, or as blisters or pustules, either flat or raised above the surface of the skin. The rash may cause skin irritation—itching, tingling, burning, or pain—or it may not cause any discomfort. The appearance and distribution of a rash are often important factors for consideration in diagnosing a particular disease.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an eruption on the skin or mucous membrane of man, the cause of which can be either external and internal. Rashes accompany skin and other types of diseases. The external causes can be physical or chemical, while internal causes include diseases of the nervous and hemopoietic systems, metabolic disorders and functional disorders of certain organs (digestion, endocrine glands), infectious diseases (measles, scarlet fever), and allergic reactions (urticaria). Rashes may be primary or secondary. Primary rashes appear on previously normal skin or mucous membrane (spots, wheals, vesicles, pustules, tubercles). Secondary rashes appear as a further development of primary elements (pigmentation, scales, crusts, abrasions, ulcers, fissures, scars). The location, number, combination, color, shape, depth, and duration of the eruptions are helpful in diagnosing the disease.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A lay term for nearly any skin eruption, but more commonly for acute inflammatory dermatoses.
(mining engineering)
Very impure coal, so mixed with waste material as to be unsalable.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


Pathol any skin eruption
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
To be considered for inclusion in the cohort of atypical rashes, patients are required to have an idiopathic skin lesion of at least 6 months' duration with at least two atypical features defined by such characteristics as morphology or location.
Of note, the rash is dosage related; we recommend scrupulous vigilance when a patient is receiving a high dosage of a targeted therapy agent.
Researchers reported in the 2013 edition of International Journal of Pediatrics and Child Health that the combination of honey, olive oil, and beeswax could be used as an alternative or complementary treatment for the treatment of nappy rash.
A raised, itchy red rash (hives) can appear as an allergic reaction to things like stings, medicines or food.
Treatment: See your GP if you think your child has eczema for the first time or if the rash becomes infected, yellow and weeping.
If the rash has already broken out into sores, make a paste out of baking soda and lukewarm water to dry out the sores.
People are infectious about four days before and four days after the onset of rashes. Those who have been diagnosed with measles need to be isolated at home and those who come in contact with them must wear a mask at all times.
"With Aquaphor's 90 years of skin care expertise, we developed a maximum-strength zinc oxide paste made for diaper rash that feels light and is free of unpleasant odors, parabens or fragrances that can irritate baby's delicate skin," said Erynn Keefe, marketing director for Aquaphor.
Aquaphor Baby Fast Relief Paste relieves diaper rash discomfort in just one use.
The Glass Test If you press the side of a clear glass firmly against the skin and the rash doesn't fade, it's a sign of meningococcal septicaemia.
Key Words: Acroputulosis of infancy, Scabies, Infant, Rash
Nappy rash is a non-specific term used to describe a range of geographical inflammatory skin conditions which occur in an otherwise healthy infant (Fischer, 2002).