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Pregnancy, Breastfeeding, and Pumping: The Ultimate Guide for Moms
Baby Top Lip Curls Under When Breastfeeding: Causes and Solutions
Baby Top Lip Curls Under When Breastfeeding: Causes and Solutions
Watching your baby breastfeed is a beautiful bonding experience, but when you notice their top lip curling under, it can raise concerns. Is it normal? Could it affect their feeding? Understanding why this happens and how to address it can make breastfeeding smoother for both you and your little one.
Why Does a Baby's Top Lip Curl Under During Breastfeeding?
A baby's top lip curling under while breastfeeding is a common occurrence, often linked to latch issues. When a baby doesn't open their mouth wide enough or has a shallow latch, their upper lip may tuck inward instead of flanging outward. This can happen due to:
- Poor positioning: If the baby isn't aligned properly with the breast, their lip may curl under.
- Tongue or lip tie: Restricted movement of the tongue or upper lip can prevent proper latching.
- Weak suck reflex: Newborns with underdeveloped muscles may struggle to maintain a good latch.
- Maternal factors: Breast shape or nipple size may influence how the baby latches.
How a Curled Lip Affects Breastfeeding
When a baby's top lip curls under, it can lead to several challenges:
- Reduced milk transfer: A shallow latch may prevent the baby from getting enough milk, leading to frustration and poor weight gain.
- Nipple pain: Improper latching can cause soreness, cracking, or even bleeding for the mother.
- Increased air intake: A poor seal may cause the baby to swallow air, leading to gas and discomfort.
How to Correct a Curled Upper Lip During Breastfeeding
Fortunately, there are ways to help your baby achieve a better latch:
- Encourage a wide-open mouth: Gently stroke your baby's lower lip to prompt them to open wider before latching.
- Use the "flipple" technique: As the baby latches, gently flip their upper lip outward with your finger.
- Check positioning: Ensure your baby's nose is level with your nipple and their body is aligned with yours.
- Seek professional help: A lactation consultant can assess for tongue or lip ties and provide personalized guidance.
When to Seek Medical Advice
While a curled lip during breastfeeding is often manageable at home, consult a healthcare provider if:
- Your baby shows signs of dehydration or poor weight gain.
- You experience persistent nipple pain despite adjusting the latch.
- You suspect a tongue or lip tie may be restricting movement.
Breastfeeding should be a joyful experience, not a painful one. With patience and the right techniques, you can help your baby latch correctly and enjoy those precious feeding moments without worry.

