erythema toxicum neonatorum
Pronunciation: eh-rih-THEE-mah TOKS-ih-kum nee-oh-nay-TOR-um
Also written as: ETN — Erythema Toxicum Neonatorum
Benign newborn rash characterized by erythematous macules with central pustules, requiring no treatment.
Full Definition
Erythema toxicum neonatorum (ETN) is a common, benign skin condition affecting approximately 50% of term newborns, typically appearing within the first 24-48 hours of life. The rash consists of erythematous macules and papules with central yellow or white pustules, often described as 'flea-bitten' appearance. Lesions can appear anywhere except palms and soles and may come and go rapidly. Wright stain of pustule contents reveals eosinophils, helping distinguish ETN from infectious conditions. The condition is self-limiting and requires no treatment.
Usage
Usage note: Latin term requiring all three words; ETN acceptable abbreviation in clinical notes.
In Context
- "Erythema toxicum neonatorum was diagnosed based on the characteristic eosinophilic pustules on Wright stain." — Newborn examination
- "ETN is a benign condition that requires only parental reassurance and no specific treatment." — Discharge planning note