Definition

Noun: * A skin condition characterized by the sudden appearance of painful, tender, red or violet-colored nodules (lumps) typically on the shins and lower legs. It is considered a type of inflammation of the fat layer under the skin (panniculitis) and is often a reaction to an underlying infection, medication, or systemic disease.

Usage

• Erythema nodosum is used exclusively as a medical term to describe this specific clinical condition. It is a singular noun but often treated as an uncountable noun when referring to the condition itself.
• It is commonly abbreviated as EN in medical notes.

Examples

• The patient presented with classic signs of erythema nodosum.
• Erythema nodosum is frequently associated with streptococcal infections or sarcoidosis.
• The painful nodules of erythema nodosum usually resolve on their own within a few weeks.

Advanced Usage

• Erythema nodosum leprosum: A specific, severe form of reaction seen in some patients with leprosy, which is distinct from classic erythema nodosum but shares part of the name due to the nodular presentation.

Variants and Related Words

• Erythema (noun): A general medical term for redness of the skin caused by increased blood flow to the capillaries.
• Nodule (noun): A small, rounded lump or swelling.
• Panniculitis (noun): Inflammation of the subcutaneous fat layer, the category of disease to which erythema nodosum belongs.

Synonyms

• There are no direct layperson synonyms for this specific medical diagnosis. Descriptive phrases include "inflammatory nodular rash on the legs" or "tender red nodules on the shins."

Related Phrases

• Migratory erythema: A different skin condition involving red, spreading patches, not to be confused with erythema nodosum.
• Induration (noun): The process of hardening, a term that may be used to describe the firm feel of the nodules in erythema nodosum.

Noun

1. skin condition characterized by tender red nodules on the shins and legs