rash

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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 It might be outdated or ideologically biased.

Rash

 

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.

rash

[rash]
(medicine)
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.

rash

Pathol any skin eruption
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
It was negative in most of the cases presenting with maculopapular rash and early pigmentary changes.
Our patient's main complaint was visual and neurological symptoms, but the patient also gave an additional history of maculopapular rash on the lower extremities, intermittent fevers, headaches, body aches, an episode of left knee, and testicular swelling.
Bullous and nonspecific maculopapular rashes involving the palms and soles of the feet are also frequently seen.
This study showed maculopapular rash as the most common reaction (26.1%) followed by FDEs and erythematous rash.
Classic rash in AOSD is characterized by transient salmonpink maculopapular rash, usually coexisting with daily high spiking fever [1].
Caption: FIGURE 1: Photograph demonstrating a maculopapular rash distributed on the palms of hand bilaterally.
Cutaneous adverse reactions to an AED are usually promptly recognized by the patient and clinicians because they typically manifest as a maculopapular rash within the first weeks after the introduction of a specific AED.
Further studies are needed to determine the exact mechanism for the emergence of maculopapular rash due to agomelatine.
A wide spectrum of dermatologic toxicities has been associated with imatinib, among which a maculopapular rash is the most common event.
Patients and Methods: All patients with cutaneous drug eruptions seen at the Dermatology Department of Mayo Hospital, Lahore, over 6 months were enrolled and the pattern of drug eruptions like urticaria, angioedema, fixed drug eruption, maculopapular rash, erythema multiforme, Stevens-Johnson syndrome and toxic epidermal necrolysis etc.
Symptoms may be present up to 10 days before an erythematous, maculopapular rash appears.
The salient clinical features of SF include the primary lesion, inoculation eschar (tache noire), headache, malaise, fever, generalized myalgia, a pink maculopapular rash and hepatosplenomegaly as was seen in the patient.