Red Spot in Baby's Mouth: When to Observe and Seek Medical Advice - Pediatrics

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Suspected wound in the oral cavity?


Hello, Doctor.
My baby has a red spot on the inner surface of the cheek in the mouth.
The baby has a habit of sucking on their fingers, and the red spot looks like a wound that might have been caused by a fingernail while sucking.
However, I'm not entirely sure.
Aside from that red spot, there are no other abnormalities in the mouth.
My baby is almost eight months old, and their appetite, sleep, temperature, bowel movements, and activity levels are all normal and consistent with their usual behavior.
Should I observe it for a few more days before deciding whether to seek medical attention? If it is just a simple wound, will it heal on its own? How long should I wait before taking them to the doctor for treatment if it does not heal? What changes should I be aware of? Thank you for your response, Doctor.

Nìmíng, 30~39 year old female. Ask Date: 2018/07/28

Dr. Xiao Kaiwen reply Pediatrics


If it is just a simple wound, it will heal on its own.
However, if after two or three days it becomes larger or more lesions appear, I recommend having it checked by a pediatrician.

Reply Date: 2018/07/28

More Info


When it comes to a red spot in a baby's mouth, particularly if it appears to be a minor injury, it is often reasonable to observe the situation for a few days. Given that your baby is almost eight months old and is otherwise healthy—showing normal eating habits, sleep patterns, temperature, bowel movements, and activity levels—this suggests that the red spot may indeed be a minor injury, possibly caused by the baby’s habit of sucking on their fingers or hands.

In most cases, minor oral injuries in infants, such as small cuts or abrasions, will heal on their own without the need for medical intervention. The oral mucosa is quite resilient, and small wounds typically heal quickly due to the rich blood supply in the area. You can expect a simple injury like this to heal within a few days, usually within 3 to 7 days, depending on the severity of the injury and the individual healing response of your baby.

However, there are certain signs and symptoms you should monitor during your observation period. If you notice any of the following changes, it would be prudent to seek medical advice:
1. Increased Size or Number of Spots: If the red spot grows larger or if new spots appear, this could indicate an infection or another underlying issue that requires medical evaluation.

2. Persistent Pain or Discomfort: If your baby seems to be in pain, is refusing to eat, or is unusually fussy, this could be a sign that the injury is more serious than initially thought.

3. Signs of Infection: Look for signs such as increased redness, swelling, warmth around the area, or discharge that may suggest an infection. Fever could also be a sign of infection.

4. Changes in Eating or Drinking: If your baby has difficulty eating or drinking, or if they seem to be in pain while doing so, this warrants a visit to the pediatrician.

5. Behavioral Changes: If your baby becomes lethargic or shows any significant changes in behavior, it is important to consult a healthcare professional.

If after a few days the red spot has not improved or if any of the concerning signs mentioned above develop, it is advisable to take your baby to a pediatrician for further evaluation. The doctor may examine the area and, if necessary, provide treatment such as topical medications to promote healing or to address any potential infection.

In summary, while it is generally safe to observe a minor oral injury in a healthy infant, staying vigilant for any changes is crucial. If the situation does not improve or worsens, seeking medical advice is the best course of action to ensure your baby’s health and well-being.

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