Newborn Lip Blister: Causes, Signs, and Tips to Deal With It

Welcoming a newborn into your life is a joyous occasion, but it also comes with a lot of questions and concerns. One common concern that parents may encounter is the presence of a blister on their newborn’s lip. If you’ve noticed your newborn with a blister on the lip, you’re not alone. This article will explore what these blisters look like, their potential causes, the symptoms to watch for, treatment options, healing tips, and when it’s essential to seek medical attention. Let’s delve into the world of newborn lip blisters and gain a better understanding of how to care for your little one.


How Do Blisters On a Baby’s Lip Look Like?

Newborns are delicate, and their tiny lips can sometimes develop blisters. These blisters on the lips of a newborn can be quite concerning for parents. To recognize them, here are some signs to look out for:

  • Small Fluid-Filled Bumps: Newborn lip blisters typically appear as small, clear, or yellowish fluid-filled bumps on the lip’s surface.
  • Pain or Discomfort: Your baby may exhibit signs of discomfort or pain, which can manifest as increased fussiness or difficulty feeding.
  • Redness and Swelling: The area around the blister may become red and slightly swollen.
  • Crusting: In some cases, a crust may form over the blister as it starts to heal.

These signs, while concerning, are not uncommon, and there are various reasons why a newborn might develop a blister on their lip.


Causes Of Lip Blisters In Babies

Understanding the causes of lip blisters in babies is crucial for effective management and prevention. Here are some common factors that can lead to blister formation on a baby’s lip:

1. Breastfeeding or Bottle-feeding

Lip blisters can form in newborns as a result of the repetitive motion and suction during breastfeeding or bottle-feeding. These are often harmless and will heal as the baby adjusts their feeding technique.


2. Viral Infections

Herpes simplex virus (cold sores) or hand, foot, and mouth disease can cause blisters on or around a baby’s lips. It’s essential to consult a pediatrician for proper diagnosis and care.


3. Skin Irritants

Exposure to certain irritants, like acidic foods, can result in blisters on a baby’s lips. Ensuring the baby’s face is clean after meals can help prevent this.


4. Drooling

Excessive drooling, especially during teething, can cause the skin around the lips to become chapped and lead to blisters. Keeping the area dry and moisturized can help reduce the risk.


5. Sunburn

Just like adults, babies’ delicate skin can get sunburned, leading to blisters on the lips. It’s crucial to protect a baby’s skin from direct sunlight and use baby-safe sunblock when outdoors.


6. Allergic Reaction

Some babies might develop lip blisters due to an allergic reaction to certain foods, skincare products, or environmental factors. Parents should monitor for other signs of allergies and seek medical advice if unsure.

Symptoms Of Blisters On Your Baby’s Lips

Recognizing the symptoms associated with lip blisters in infants is crucial for providing the right care and comfort for your baby. Here are some common symptoms to watch for:


1. Fluid-Filled Blisters: Blisters appear as small, fluid-filled sacs on the lips. They can vary in size and may be clear or slightly cloudy.

2. Redness and Swelling: The affected area around the blister may become red and swollen, making it more noticeable.


3. Pain and Discomfort: Babies may exhibit signs of discomfort, such as fussiness, crying, or difficulty feeding due to the pain caused by the blisters.

4. Tingling or Itching: Older infants or toddlers may express discomfort by rubbing or scratching their lips due to the tingling or itching sensation.


5. Fever: In some cases, the presence of lip blisters may coincide with a fever, indicating an underlying viral infection.

6. Sore Throat: If the blisters are caused by a viral infection like the herpes simplex virus (HSV), your baby may also develop a sore throat.


7. Difficulty Eating: Babies with lip blisters may have difficulty latching onto the breast or bottle, leading to feeding problems and potential weight loss.

8. Excessive Drooling: Increased drooling can occur as a result of discomfort or pain associated with lip blisters.

9. Crusting and Scabbing: As the blisters heal, they may form crusts or scabs on the lips. It’s essential not to pick at these, as it can lead to infection or scarring.

10. Spread to Surrounding Areas: Blisters can sometimes spread to the surrounding skin, including the chin, cheeks, or inside the mouth, causing additional discomfort.


While these symptoms can be distressing for both you and your baby, it’s important to remember that most lip blisters in newborns are not a cause for panic and can be managed effectively.

Treatment For Lip Blisters In Babies

If you’ve noticed a blister on your baby’s lip, you may be wondering how to provide them with relief. Here are some treatment options to consider:


1. Keep it Clean: Gently clean the affected area with mild soap and water to prevent infection.

2. Avoid Irritants: Ensure that any products that come into contact with your baby’s lips, such as pacifiers, are clean and free from potential irritants.


3. Use a Barrier: Applying a gentle barrier ointment, such as petroleum jelly, can help protect the blistered area from further irritation.

4. Monitor Feeding: Pay attention to your baby’s feeding habits and ensure they are comfortable during feedings. If needed, consult with a lactation consultant for breastfeeding support.

Tips To Heal Baby’s Lip Blisters

In addition to the treatment options mentioned above, here are some tips to help your baby’s lip blisters heal more quickly:

  • Promote Adequate Hydration: Ensure your baby is well-hydrated, as proper hydration can aid in the healing process.
  • Avoid Sun Exposure: Protect your baby from direct sunlight and extreme heat, which can worsen the condition.
  • Use Soft, Clean Cloths: When wiping your baby’s face, use soft, clean cloths to prevent further irritation.
  • Practice Patience: Lip blisters typically resolve on their own within a week or two. Be patient, and give your baby’s body time to heal.

Remember that every baby is unique, and what works for one may not work for another. If you have concerns about your baby’s lip blisters or if they worsen, consult your pediatrician for guidance.


When to Call the Doctor

While most lip blisters in babies are harmless and resolve on their own with proper care, there are situations where it’s crucial to seek medical attention. Contact your doctor if:

  • The blister appears infected, with signs of pus, increased redness, or warmth.
  • Your baby develops a fever along with the blister.
  • The blister does not improve or worsen despite home care.
  • Your baby experiences severe discomfort or difficulty feeding.

Your pediatrician can assess the situation and provide guidance on the appropriate course of action.



1. Can Pacifiers Lead to Blisters on a Baby’s Lips?

Yes, prolonged and vigorous sucking on pacifiers can create friction and pressure on a baby’s lips, potentially leading to the development of blisters. It’s essential to ensure that pacifiers are clean and free from irritants to minimize the risk.

2. Are Milk Blisters Painful for Infants?

Milk blisters, also known as milk blebs or milk blisters, can sometimes develop on a baby’s lips due to breastfeeding issues. While they can be uncomfortable for the baby, they are not typically painful. However, they may cause discomfort during feeding, leading to fussiness.


In conclusion, discovering a blister on your newborn’s lip can be concerning, but with the right knowledge and care, you can effectively manage and treat the condition. Remember that most lip blisters in babies are harmless and will heal with time and proper care. If you ever have doubts or concerns, don’t hesitate to reach out to your pediatrician for guidance and support as you navigate this journey of parenthood. Your baby’s health and well-being are always a top priority.

Also Read:


Chapped Lips in Newborn
Mouth Ulcers (Canker Sores) in Newborns & Children
Home Remedies for Mouth Ulcers in Newborns & Children

This post was last modified on October 31, 2023 9:51 am

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