Lip Licking Rash (Lip Licker's Dermatitis) in Baby
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAD, AAP, NIH guidelines
Last reviewed:
Baby skin is sensitive and changes frequently. If you are noticing lip licking rash (lip licker's dermatitis) in baby, here is what you need to know.
The short answer
Lip licker's dermatitis causes a red, dry, irritated ring around the mouth from repeated lip licking. Saliva enzymes break down the skin barrier, creating a cycle of licking, drying, and more licking. The key to treatment is breaking the cycle by applying a thick barrier like petroleum jelly frequently and helping older children become aware of the habit.
Key takeaways
- Lip licker's dermatitis causes a red, dry, irritated ring around the mouth from repeated lip licking. Saliva enzymes break down the skin barrier, creating a cycle of licking, drying, and more licking. The key to treatment is breaking the cycle by applying a thick barrier like petroleum jelly frequently and helping older children become aware of the habit.
- Usually normal when: Mild chapping around the lips that improves with regular petroleum jelly application
- Call your doctor if: The perioral rash becomes infected with yellow crusting or pus
- Varies by age — see the age-by-age breakdown below
“Eczema is very common in babies and children. About 1 in 10 children will develop eczema, typically starting in the first few months of life.”
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What Parents Should Know
According to AAD, AAP, NIH guidelines, lip licker's dermatitis causes a red, dry, irritated ring around the mouth from repeated lip licking. Saliva enzymes break down the skin barrier, creating a cycle of licking, drying, and more licking. The key to treatment is breaking the cycle by applying a thick barrier like petroleum jelly frequently and helping older children become aware of the habit. At 0-3 months, lip licking dermatitis is not common at this age since young infants do not habitually lick their lips. Redness around a newborn's mouth is more likely from drool irritation, feeding contact, or perioral eczema. Apply petroleum jelly as a barrier to protect the skin. It is generally considered normal when mild chapping around the lips that improves with regular petroleum jelly application. However, you should contact your pediatrician promptly if the perioral rash becomes infected with yellow crusting or pus.
Normal vs. Concerning
By Age
What to expect by age
0-3 months
Lip licking dermatitis is not common at this age since young infants do not habitually lick their lips. Redness around a newborn's mouth is more likely from drool irritation, feeding contact, or perioral eczema. Apply petroleum jelly as a barrier to protect the skin.
3-6 months
As teething begins and drooling increases, some babies may start mouthing and licking their lips more. The constant moisture and drying cycle can create a red, chapped ring around the mouth. Frequent application of petroleum jelly or a thick lip balm creates a protective barrier.
6-12 months
Babies at this age may develop a pattern of lip licking, especially during teething or when starting new foods. The rash extends beyond the lip border in a distinct pattern. Keep a small container of petroleum jelly handy and apply frequently, especially before meals and sleep.
12-24 months
Toddlers may develop habitual lip licking as a self-soothing behavior. The rash can become quite pronounced and uncomfortable. Apply thick barrier cream liberally and frequently. If the rash is severe, your pediatrician may prescribe a mild topical steroid for short-term use to heal the skin before transitioning back to barrier-only maintenance.
What to Tell Your Pediatrician
- Describe when you first noticed lip licking rash (lip licker's dermatitis) in baby and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the rash around the mouth is persistent, worsening, or causing pain.
- Mention if the skin is cracking or bleeding despite barrier cream use.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Mild chapping around the lips that improves with regular petroleum jelly application
- Temporary redness during teething that resolves with barrier cream
- The rash around the mouth is persistent, worsening, or causing pain
- The skin is cracking or bleeding despite barrier cream use
- You suspect the habit is related to anxiety or a behavioral pattern you want to address
- The perioral rash becomes infected with yellow crusting or pus
- A blistering rash around the mouth that could indicate herpes simplex rather than lip licking dermatitis
What You Can Do at Home
- Keep track of when you notice lip licking rash (lip licker's dermatitis) in baby — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that mild chapping around the lips that improves with regular petroleum jelly application — this is generally within the range of normal.
- At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Use fragrance-free, hypoallergenic products on your baby's skin. Avoid over-bathing — 2-3 baths per week is usually sufficient.
- While monitoring at home, seek immediate care if the perioral rash becomes infected with yellow crusting or pus.
Related Conditions
Baby Rash Around the Mouth - Drool Rash and Other Causes
A rash around your baby's mouth is most commonly drool rash (contact irritant dermatitis from constant moisture). Drool rash looks like red, slightly rough, chapped skin around the mouth, chin, and cheeks. It is very common during teething when drool production increases dramatically. Other causes include food contact irritation (especially from acidic foods like tomato and citrus), pacifier friction, eczema, and occasionally hand-foot-and-mouth disease. True food allergies typically cause hives or swelling, not a flat red rash.
Baby Chin Rash from Drooling
Drool rash is extremely common and appears as red, irritated, or slightly bumpy skin on the chin, cheeks, neck, and chest where drool sits. It is caused by the constant moisture and digestive enzymes in saliva irritating the skin. Keeping the area dry and applying a barrier like petroleum jelly before drool exposure is the most effective treatment.
Severe Drool Rash on Baby
Severe drool rash occurs when persistent moisture from saliva breaks down the skin barrier, causing raw, red, cracked skin on the chin, cheeks, neck, and chest. It is especially common during teething. Frequent gentle wiping (patting not rubbing), applying a thick barrier like petroleum jelly, and treating any secondary infection are key to management.
Perioral Dermatitis in Babies
Perioral dermatitis causes small red or pink bumps around the mouth, nose, and sometimes eyes. In babies, it is often confused with drool rash or eczema. While drool rash typically clears with barrier cream, perioral dermatitis may need specific treatment from your pediatrician. It is not harmful and does not scar, but it can take time to resolve.
Related Resources
Rash Decision Tree
Identify common rashes and determine when to seek care.
Baby Skin Conditions Guide
Visual guide to common baby skin conditions, rashes, and when to see a doctor.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is lip licking rash (lip licker's dermatitis) in baby normal?
When should I call the doctor about lip licking rash (lip licker's dermatitis) in baby?
When is lip licking rash (lip licker's dermatitis) in baby normal?
What causes lip licking rash (lip licker's dermatitis) in baby?
What should I mention to my pediatrician about lip licking rash (lip licker's dermatitis) in baby?
Is lip licking rash (lip licker's dermatitis) in baby normal at 0-3 months?
Is lip licking rash (lip licker's dermatitis) in baby normal at 3-6 months?
Should I go to the ER for lip licking rash (lip licker's dermatitis) in baby?
Does lip licking rash (lip licker's dermatitis) in baby go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Lip Licking Rash (Lip Licker's Dermatitis) in Baby.
Things to mention
- Describe when you first noticed lip licking rash (lip licker's dermatitis) in baby and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the rash around the mouth is persistent, worsening, or causing pain.
- Mention if the skin is cracking or bleeding despite barrier cream use.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- The rash around the mouth is persistent, worsening, or causing pain
- The skin is cracking or bleeding despite barrier cream use
- You suspect the habit is related to anxiety or a behavioral pattern you want to address
Urgent signs to report immediately
- The perioral rash becomes infected with yellow crusting or pus
- A blistering rash around the mouth that could indicate herpes simplex rather than lip licking dermatitis
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of lip licking rash (lip licker's dermatitis) in baby are normal. Talk to your pediatrician if the perioral rash becomes infected with yellow crusting or pus.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Skin Concerns
Baby Rash Around the Mouth - Drool Rash and Other Causes
A rash around your baby's mouth is most commonly drool rash (contact irritant dermatitis from constant moisture). Drool rash looks like red, slightly rough, chapped skin around the mouth, chin, and cheeks. It is very common during teething when drool production increases dramatically. Other causes include food contact irritation (especially from acidic foods like tomato and citrus), pacifier friction, eczema, and occasionally hand-foot-and-mouth disease. True food allergies typically cause hives or swelling, not a flat red rash.
Baby Chin Rash from Drooling
Drool rash is extremely common and appears as red, irritated, or slightly bumpy skin on the chin, cheeks, neck, and chest where drool sits. It is caused by the constant moisture and digestive enzymes in saliva irritating the skin. Keeping the area dry and applying a barrier like petroleum jelly before drool exposure is the most effective treatment.
Severe Drool Rash on Baby
Severe drool rash occurs when persistent moisture from saliva breaks down the skin barrier, causing raw, red, cracked skin on the chin, cheeks, neck, and chest. It is especially common during teething. Frequent gentle wiping (patting not rubbing), applying a thick barrier like petroleum jelly, and treating any secondary infection are key to management.
Perioral Dermatitis in Babies
Perioral dermatitis causes small red or pink bumps around the mouth, nose, and sometimes eyes. In babies, it is often confused with drool rash or eczema. While drool rash typically clears with barrier cream, perioral dermatitis may need specific treatment from your pediatrician. It is not harmful and does not scar, but it can take time to resolve.
My Baby Has an Extra Nipple (Accessory Nipple)
Accessory (supernumerary) nipples are one of the most common minor congenital findings, occurring in about 1 in 18 people. They appear as small, flat, often pigmented bumps along the "milk line" — an embryonic line running from the armpit to the groin on each side. Most people mistake them for moles. Accessory nipples are almost always harmless and require no treatment. In rare cases, they may be associated with kidney abnormalities, so some pediatricians recommend a renal ultrasound if one is found, though this practice varies.
My Baby Was Born with a Raw Spot on Their Scalp (Aplasia Cutis)
Aplasia cutis congenita (ACC) is a condition where a baby is born with a small area of missing skin, most commonly on the scalp. It occurs in about 1 in 10,000 births. The affected area may look like a raw wound, an ulcer, or may have already healed into a thin, shiny scar by the time of birth. Most cases are small, isolated, and heal well with basic wound care — the area eventually forms a hairless scar. Larger defects or those associated with other findings may need more investigation, but isolated small ACC has an excellent prognosis.