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Why Does My Baby Have a Blister on Her Lip?

Published in Infant health 2 mins read

Your baby likely has a suckling blister (also known as a sucking callus) on their lip due to the repetitive and vigorous sucking motion they use while feeding.

Understanding Suckling Blisters

These blisters are quite common in newborns and infants. Here's a more detailed explanation:

  • Cause: The strong sucking action during breastfeeding or bottle-feeding can create friction on the lip, leading to the formation of a small, fluid-filled blister. Some babies even develop them in utero from sucking on their hands or forearms.

  • Appearance: Suckling blisters typically appear as a small, raised, white or clear bump on the center of the upper lip.

  • Harmlessness: These blisters are generally harmless and don't cause the baby any pain or discomfort. They're a normal physiological response to sucking.

  • Treatment: Suckling blisters don't usually require any treatment. They will typically resolve on their own within a few days or weeks as the skin toughens up.

  • Do Not Pop: Avoid the urge to pop or squeeze the blister. This can increase the risk of infection.

When to Consult a Doctor

While suckling blisters are usually benign, it's a good idea to consult with your pediatrician if:

  • The blister appears infected (redness, swelling, pus).
  • Your baby seems to be in pain or is having difficulty feeding.
  • The blister is accompanied by other symptoms, such as fever or rash.
  • You are concerned about the blister for any reason.

In most cases, the blister is simply a sign that your baby is feeding well and will disappear without any intervention.

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