<s>[INST] i noticed this evening that my 10 month old had a white bump on the inside of her cheek. she's had a fever the last day or two and hasn't been eating as much as usual. It doesn't look like thrush as it's just a single bump, but maybe that's how thrush looks in the beginning stages? i'm unsure of what to do. [/INST] Hi and thanks for this query.I am so sorry to hear about this white bump that you have reported in your child's mouth. from the description, it is a canker sore. The inconvenience is that because of pain, these children do not eat well which may lead to complications. However, most of them resolve within a few days and require no antibiotics. You ay administer children Tylenol for pains .I hope this helps. I wish you well. </s>