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Erythemas

Terms

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Erythema ab igne
long-term exposure to infrared radiation
Erythema migrans
term used to describe two very different types of erythema. (Erythema chronicum migrans and Geographic tongue)
Erythema induratum
(Bazin disease) very rare skin ulceration on the back of the calves.
Erythema multiforme
unknown etiology, possibly mediated by deposition of immune complex ( mostly IgM ) in the superficial microvasculature of the skin and oral mucous membrane that usually follows an antecedent infection or drug exposure. severe form may be related to Stevens-Johnson syndrome. causes include herpes simplex, bacterial infections (commonly Mycoplasma) and fungal, drug reactions (most commonly to sulfa drugs, phenytoin, barbiturates, penicillin, allopurinol), human form of orf, or a host of internal ailments.
Palmar erythema
reddening of the palms at the thenar and hypothenar eminences. May be seen in portal hypertension, pregnancy, liver disease, rheumatoid arthritis, eczema or psoriasis. attributed to elevated estrogen.
Erythema infectiosum
(Fifth Disease) (slapped cheek syndrome) infection caused by parvovirus B19.
Geographic tongue
(benign migratory glossitis) tends to run in families and is associated with several different genes. more commonly found in people who are affected by environmental sensitivity, such as allergies, eczema, and asthma.
Erythema toxicum
very common rash in infants. It appears in up to half of newborns carried to term, usually between day 2-5 after birth. small pustular lesions, each on a separate reddened base.
Erythema marginatum
major jones criterion in rheumatic fever. pink rings on the trunk and inner surfaces of the arms and legs which come and go for as long as several months. rings are barely raised and are non-pruritic. face is generally spared.
Erythema chronicum migrans
rash often (though not always) seen in the early stage of Lyme disease.
Erythema nodosum
inflammation of the fat cells under the skin (panniculitis). causes include infections (e.g., tuberculosis, streptococcal, Mycoplasma pneumoniae, and Epstein-Barr virus), sarcoidosis, inflammatory bowel disease, autoimmune disorders (e.g., Behçet's disease), pregnancy, medications (sulfonamides, oral contraceptives, bromides), and cancer.

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