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Transient neonatal pustular melanosis
Medical condition / From Wikipedia, the free encyclopedia
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Transient neonatal pustular melanosis (TNPM), also known as pustular melanosis, is a type of neonatal pustular eruption that is a transient rash common in newborns. It is vesiculopustular rash made up of 1–3 mm fluid-filled lesions that rupture, leaving behind a collarette of scale and a brown macule.[3] The lesions are fragile and with no surrounding erythema.[3] This rash occurs only in the newborn stage, usually appearing a few days after birth,[4] but pigmented macules are sometimes already present at birth.[3] The rash usually fades over three to four weeks but may linger for up to three months after birth.[3] It can occur anywhere on the body, including the palms and soles.[4]
Transient neonatal pustular melanosis | |
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Other names | Transient neonatal pustulosis[1] and lentigines neonatorum[2] |
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Transient neonatal pustular melanosis | |
Specialty | Dermatology, pediatrics |
The cause of TNPM is unknown. It has been suggested that TNPM is merely a variant of erythema toxicum neonatorum[3] or a "precocious" form of erythema toxicum neonatorum.[5] No treatment is needed except for parental reassurance.