Cleft Lip: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 26th, 2026.
Published on April 2nd, 2026. Updated on August 28th, 2026.
Key Takeaways
Cleft lip is a birth defect where the upper lip doesn't form properly during pregnancy
Cleft lip, cleft palate, or both affect roughly 1 in 700 babies worldwide, although estimates vary by population and by the type of cleft.
Surgery can successfully repair most cleft lips, usually performed within the first year of life
Early intervention and proper care help children develop normal speech and eating abilities
With treatment, children with cleft lip can lead completely normal lives
Overview
Cleft lip is a common birth defect that occurs when the upper lip doesn't form completely during early pregnancy. This creates a gap or split in the lip that can range from a small notch to a large opening extending to the nose.
The condition affects approximately 1 in 700 babies worldwide. It can occur on one side of the lip (unilateral) or both sides (bilateral). Boys are slightly more likely to have cleft lip than girls.
While cleft lip may seem concerning to new parents, it's important to know that this condition is highly treatable. With appropriate medical care and attention to any related health conditions, children with cleft lip can develop well and live healthy, fulfilling lives. The good news is that doctors have been treating cleft lip successfully for many years. Your baby's medical team will create a care plan to help them thrive. Many people treated for cleft lip do very well, although some need ongoing dental, speech, hearing, or surgical care, particularly when cleft palate is also present.
Symptoms & Signs
Cleft lip is usually visible at birth and can vary significantly in severity. The opening may be small or extend all the way to the nose.
Primary Symptoms
Visible gap or split in the upper lip
Difficulty with breastfeeding or bottle feeding
Milk or formula may come through the nose during feeding when a cleft palate is also present.
Speech difficulties as the child grows older, particularly when cleft palate is also present
When to Seek Care
Most cleft lips are diagnosed immediately at birth during routine newborn examination. However, some smaller clefts might be noticed later when feeding difficulties arise. Parents may notice their baby has trouble sucking or seems frustrated during feeding times. Your baby might also have breathing sounds that seem unusual during meals. If you see these signs, tell your pediatrician right away.
When to Seek Immediate Care
Contact your pediatrician promptly for signs of dehydration or poor weight gain. Seek urgent medical care if your baby has trouble breathing, turns blue or gray, becomes unusually sleepy, or cannot feed safely.
Causes & Risk Factors
Age
Risk Factors
Factors that may increase the likelihood of cleft lip or palate include older maternal age, family history, smoking or alcohol use during pregnancy, poor maternal nutrition, and diabetes or obesity before pregnancy.
Genetics
Family history of cleft lip or palate increases chances
Lifestyle
Smoking, alcohol use, and poor nutrition during pregnancy
Other Conditions
Diabetes or obesity before pregnancy may increase risk
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Diagnosis
Medical History & Physical Examination
Doctors typically diagnose cleft lip immediately after birth through visual examination. The medical team will assess the size and location of the cleft. They'll also check for other related conditions like cleft palate.
Your doctor will ask about family history of birth defects and review your pregnancy history. This helps them understand potential causes and plan the best treatment approach.
Diagnostic Testing
Ultrasound during pregnancy can sometimes detect cleft lip around 18-20 weeks
Additional imaging is not routinely needed for an isolated cleft lip but may be considered when doctors suspect other facial or structural conditions.
Hearing tests may be recommended, especially when cleft palate is also present, because cleft palate is associated with middle-ear problems and hearing loss.
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Treatment Options
The main goal of treatment is to restore normal function and appearance while supporting healthy development.
Conservative Treatments
Special feeding bottles and techniques to help with nutrition
Speech therapy to develop proper speaking patterns
Hearing support if ear problems develop alongside the cleft lip
Dental care to address any tooth alignment issues
Advanced Treatments
Surgical repair, typically performed between 3-6 months of age when indicated
Follow-up surgeries to refine appearance and function as the child grows
Orthodontic treatment during childhood and teenage years when needed
Discuss all treatments, supplements, and complementary approaches with your child's cleft-care team to make sure they are safe and do not interfere with recommended care. Your surgeon will explain exactly what the surgery involves and what to expect afterward. Most surgeries for cleft lip take only one or two hours and have good success rates.
Living with the Condition
Daily Management Strategies
Focus on maintaining good nutrition through proper feeding techniques. Ask a feeding specialist or cleft-care team whether your baby needs a specialized bottle. Many babies with an isolated cleft lip can feed with standard methods, while specialized equipment is more often needed when the palate is involved. Keep the surgical site clean and protected as directed by your medical team. Connect with support groups for families dealing with similar challenges. You'll learn from other parents who have walked the same path as you. Many hospitals offer counseling and support services for families. These resources can help you feel less alone and more confident as you care for your child.
Exercise & Movement
Most physical activities are safe for children with cleft lip. Swimming may need to wait until after surgery and healing is complete. Always follow your doctor's specific guidelines about activity restrictions. Your child can usually play and run around normally once healed. Sports and outdoor activities are encouraged to keep your child healthy and active. Ask your doctor about any limits on specific activities during recovery.
Prevention
Take folic acid supplements before and during early pregnancy
Avoid alcohol during pregnancy
Maintain good nutrition with a balanced diet rich in vitamins and minerals
Quit smoking before becoming pregnant to reduce risks
Take a prenatal vitamin containing the recommended amount of folic acid before pregnancy and during early pregnancy. Folic acid supports fetal development, but it cannot prevent every cleft lip. Good health habits before pregnancy give your baby the best start. Managing any health conditions like diabetes can also reduce risks.
Frequently Asked Questions
Most children need at least one surgery to repair the cleft lip, usually around 3-6 months of age. Some may need additional procedures as they grow to refine the results.
Breastfeeding can be challenging but may be possible depending on the cleft's size. Understanding rare medical conditions and feeding adaptations can help families find the best approach.
An isolated cleft lip usually does not cause major speech problems. Children with an associated cleft palate may need speech evaluation or therapy, and early assessment can help identify their needs.
There can be a genetic component, but most cases occur without any family history. If you have one child with cleft lip, the chance of having another affected child is slightly higher.
Recovery typically takes 1-2 weeks with careful attention to keeping the surgical site clean. Your surgeon will provide specific care instructions for optimal healing.
Still have questions?
Consult with a healthcare professional for personalized advice.