Newborn Nursery at LPCH

Sucking Blister

photo by Janelle Aby, MD

This lesion is fairly typical of the appearance of a sucking blister at birth. While the blister created by the infant sucking on his extremity in the womb may still be intact at the time of delivery, often it appears as a flat, scabbed, healing area (as shown here). Sucking blisters are solitary lesions that occur only in areas accessible to the infant's mouth. They are benign and resolve spontaneously. The appearance and location of the lesion is usually sufficient for diagnosis, but if the infant is observed sucking on the affected area, the diagnosis is certain.

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