5-Minute Clinical Consult: Erythema Nodosum

Erythema Nodosum

Description

Clinical pattern of multiple, bilateral, cutaneous, tender, and somewhat painful inflammatory, nonulcerating, and nonscarring eruptions that undergo characteristic color changes ending in temporary bruise-like areas
Occurs most commonly on the extensor surface of the shins, less common on thighs and forearms
Often idiopathic, but may be seen as a response to a variety of clinical entities
Usually subsides in 3–6 weeks without scarring or atrophy
Synonym(s): Dermatitis contusiformis

ALERT
Pediatric Considerations
Incidence equal, male and female

Pregnancy Considerations
May have repeat outbreaks during pregnancy

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