rash

(noun)

An area of reddened, irritated, and inflamed skin.

Related Terms

Examples of rash in the following topics:

  • Rash

    • A rash is a change of the skin which affects its color, appearance, or texture.
    • A rash is a change of the skin which affects its color, appearance, or texture.
    • Rashes may be localized to one body surface, or extend over all the skin.
    • The causes of a rash are extremely broad, which may make the evaluation of a rash extremely difficult.
    • The characteristic measles rash is classically described as a generalized, maculopapular, erythematous rash that begins several days after the fever starts.

  • Dermatomes

    • Symptoms that follow a dermatome, such as pain or a rash, may indicate a pathology that involves the related nerve root.
    • Viruses that remain dormant in nerve ganglia, such as the varicella zoster virus that causes both chickenpox and shingles, often cause either pain, rash, or both in a pattern defined by a dermatome.
    • Shingles is one of the only diseases that causes a rash in a dermatomal pattern, and as such, this is its defining symptom.
    • The shingles rash appears across a dermatome.
    • In this patient, one of the dermatomes in the arm is affected, restricting the rash to the length of the back of the arm.

  • Vaccine Safety

    • Vaccines carry risks, ranging from rashes or tenderness at the site of injection to fever-associated seizures.
    • Vaccines carry risks, ranging from rashes or tenderness at the site of injection to fever-associated seizures called febrile convulsions and dangerous infections in those with compromised immune systems.

  • Shingles

    • Herpes zoster, commonly known as shingles, is a viral disease caused by the reactivation of the chickenpox virus, characterized by a painful skin rash with blisters in a limited area on one side of the body, often in a stripe.
    • The virus may spread from one or more ganglia along nerves of an affected segment and infect the corresponding dermatome (an area of skin supplied by one spinal nerve) causing a painful rash.
    • Although the rash usually heals within two to four weeks, some sufferers experience residual nerve pain for months or years, a condition called postherpetic neuralgia.

  • Introduction to the Four Functions of Governmen

    • Before jumping to rash conclusions, however, let us think briefly about four functions or services provided by government:

  • Viral Skin Diseases

    • Although the zoster rash usually heals within two to four weeks, some sufferers experience residual nerve pain for months or years, a condition called postherpetic neuralgia.
    • In most cases after 1–2 days, but sometimes as long as three weeks, the initial phase is followed by the appearance of the characteristic skin rash.
    • The pain and rash most commonly occurs on the torso, but can appear on the face, eyes, or other parts of the body.
    • At first the rash appears similar to the first appearance of hives.
    • Topical lotions containing calamine can be used on the rash or blisters and may be soothing.

  • Organ Toxicity

    • Some antibiotics such as Tetracycline can cause phototoxicity, also known as sun poisoning; the result of which is that very short exposures to direct sunlight can cause severe skin irritation, with the appearance being quite similar to a rash or sunburn .
    • The Tetracycline in a patient's skin becomes toxic when exposed to sunlight, which causes an allergic reaction and leads to rash on the affected area.
    • This rash seen on a forearm is a typical reaction observed when an antibiotic causes phototoxicity.

  • Systemic Lupus Erythematosus

    • As many as 30% of sufferers have some dermatological symptoms (and 65% suffer such symptoms at some point), with 30% to 50% suffering from the classic malar rash (or butterfly rash) associated with the disease .
    • Lupus can manifest with a "butterfly rash" across the cheeks and nose, as shown darkened in this illustration.

  • Meningitis

    • If a rash is present, it may indicate a particular cause of meningitis.
    • For instance, meningitis caused by the bacterium Neisseria meningitidis (known as "meningococcal menigitis") can be differentiated from meningitis with other causes by a rapidly spreading petechial rash, which may precede other symptoms.
    • The rash consists of numerous small, irregular purple or red spots ("petechiae") on the trunk, lower extremities, mucous membranes, conjuctiva, and (occasionally) the palms of the hands or soles of the feet.
    • Meningococcal bacteria may be accompanied by a characteristic rash.

  • Riots

    • A riot is a form of civil disorder characterized by disorganized groups lashing out in a sudden and intense rash of violence, vandalism or other crime.