Conversation: The conversation between human and AI assistant.
[|Human|] My 2 year old has a white blister on the right side of his bottom lip. It s just inside his lip. I can only see it when his mouth is open. The surrounding area is red. How do I know if it s a cold sore or if he s been chewing on his lip? How can I make it better? He woke up early this morning and pointed to his lip and said, What happened?
[|AI|]  Hi. Welcome to Chat Doctor . I have gone through your query and can understand your concerns. As per your complaint a white blister inside the mouth of your son that has a red surrounding area seems like an Authors ulcer or canker sore or a traumatic ulcer caused by chewing or biting the lip and does not seem like Cold sore as cold sores appear as fluid filled blisters commonly present over the lips. I would suggest you to consult a Periodontist or an Oral Physician and get evaluated and in case if it is an authors ulcer he can advise him to apply a numbing gel but to be precise to apply only over the ulcer. You can be advised to apply a steroid ointment to reduce inflammation. Vitamin B complex in syrup form can be given. Tylenol can be advised to reduced pain. Applying cold compress or ice over it can relieve. Give him soft diet, more of fluids. Avoid spicy and citrus foods. Hope this information helps. Thanks and regards. Chat Doctor.