Should I go see a doctor or will these lesions heal on their own? Is there anything I can do to help them?

If you are uncertain about your child's condition and worried about lesions around their mouth, it would be best to consult with a healthcare professional. They can provide a proper diagnosis and recommend the appropriate treatment. In the meantime, continue to offer your child foods and liquids that they enjoy, avoiding anything acidic that may cause discomfort. If you suspect it could be a cold sore, it is not dangerous but you may still want to seek medical advice. Wishing your child a speedy recovery.