erythema migrans


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Related to erythema migrans: erythema multiforme

erythema

 [er″ĭ-the´mah]
redness of the skin caused by congestion of the capillaries in the lower layers of the skin. It occurs with any skin injury, infection, or inflammation.
erythema chro´nicum mi´grans a ring-shaped erythema due to the bite of a tick of the genus Ixodes; it begins as an erythematous plaque several weeks after the bite and spreads peripherally with central clearing. Often there are also systemic symptoms, including chills, fever, headache, vomiting, backache, and stiff neck. See also lyme disease.
gyrate erythema (erythema gyra´tum) erythema multiforme characterized by the development of lesions that tend to migrate and spread peripherally with central clearing.
erythema ab ig´ne permanent erythema produced by prolonged exposure to excessive nonburning heat. It is seen most often on the legs of women, but under appropriate environmental circumstances, it can occur anywhere on the body in either sex.
erythema indura´tum a chronic necrotizing vasculitis, usually occurring on the calves of young women; see also bazin's disease.
erythema infectio´sum a mild, self-limiting disease of childhood characterized by a lacelike skin rash symmetrically distributed on the hands, arms, and legs, with few or no other symptoms; occasionally there is a low grade fever, and the condition often clears up without specific treatment. The incubation period is six days to two weeks. This disease is contagious and originally was believed to be a form of rubella; because the rash can resemble that of scarlet fever and German measles, it is important to differentiate this mild condition from those more serious ones. Called also fifth disease.
erythema margina´tum a type of erythema multiforme in which the reddened areas are disk-shaped, with elevated edges.
erythema margina´tum rheuma´ticum a superficial, often asymptomatic, form of gyrate erythema associated with some cases of rheumatic fever, which is characterized by the presence on the trunk and extensor surfaces of the extremities of a transient eruption of flat to slightly indurated, nonscaling, and usually multiple lesions.
erythema mi´grans geographic tongue.
erythema multifor´me a symptom complex representing a reaction of the skin and mucous membranes secondary to various known, suspected, and unknown factors, including infections, ingestants, physical agents, malignancy, and pregnancy. The conditions in the complex are characterized by the sudden onset of a reddened macular, bullous, papular, or vesicular eruption, the characteristic lesion being the iris, bull's eye, or target lesion, which consists of a central papule with two or more concentric rings. The complex includes a mild self-limited mucocutaneous form (erythema multiforme minor) and a severe, sometimes fatal, multisystem form (stevens-johnson syndrome).
erythema nodo´sum a type of panniculitis occurring usually as a hypersensitivity reaction to multiple provoking agents, including various infections, drugs, sarcoidosis, and certain enteropathies. It may also be of idiopathic origin. It most often affects young women and is characterized by the development of crops of transient, inflammatory, nonulcerating nodules that are usually tender, multiple, and bilateral, and most commonly located on the shins; the lesions involute slowly, leaving bruiselike patches without scarring. The acute disease is often associated with fever, malaise, and arthralgias. A chronic variant sometimes occurs without any serious associated systemic disease.
toxic erythema (erythema tox´icum) a generalized erythematous or erythematomacular eruption due to administration of a drug or to bacterial or other toxins or associated with various systemic diseases.
erythema tox´icum neonato´rum a benign, idiopathic, very common, generalized, transient eruption occurring in infants during the first week of life, usually consisting of small papules or pustules that become sterile, yellow-white, firm vesicles surrounded by an erythematous halo and some edema.

erythema migrans

(mī′grənz)
n.
An annular skin lesion characteristic of Lyme disease, consisting of a red, raised border surrounding the site of a tick bite.

erythema migrans (EM)

a disease that begins as small papules that spread peripherally, characterized by a raised, red margin and clearing in the center. It may mark the site of a tick bite and is a diagnostic sign of Lyme disease. Also called bullseye rash.
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Erythema migrans in Lyme disease

Erythema migrans (EM)

A red skin rash that is one of the first signs of Lyme disease in about 75% of patients.
Mentioned in: Lyme Disease
References in periodicals archive ?
In vitro susceptibility testing of Borrelia burgdorferi sensu lato isolates cultured from patients with erythema migrans before and after antimicrobial chemotherapy.
A correlation was observed between the serum levels of total NO and nitrotyrosine in patients with Erythema migrans (r=0.
Tick Bites and Erythema Migrans in Georgia: It Might NOT be Lyme Disease
All the second episodes of erythema migrans were caused by a strain that was genotypically distinct from the organism that had caused the first episode.
Systemic symptoms without erythema migrans as the presenting picture of early Lyme disease.
Erythema migrans is a red circular patch that appears at the site of the bite.
The hallmark sign of LD is the "bulls-eye rash" or erythema migrans (EM) which may develop with each tick bite.
In addition, unlike the small short-lived rash sometimes left by normal tick bites, Lyme-infected bites often result in an expanding, red patch called erythema migrans that can start three to 30 days after the tick bite and last for several weeks.
In most people, the first symptom of Lyme disease is a red rash known as erythema migrans (EM).
The red flag should go up for ehrlichiosis whenever someone who has been exposed to ticks has a febrile [feverish] illness, but not erythema migrans, the rash characteristic of Lyme disease," says Dr.
It is characterized by multiple signs and symptoms, varying from the early phase erythema migrans (EM) to neurologic manifestations, arthritis, and acrodermatitis chronica atrophicans and less often to cardiac conduction disorders (1).