I have a 2.5 year old.  He has had a fever ranging as high as 38.5 but is gone as long as I treat with Tylenol.  However when I went to brush his teeth his gums was swollen and red. I noticed they seem to flare up and go away. He told me his teeth hurt on and off today.  He brushes his teeth every night.
Hello, Welcome Thanks for consulting Chat Doctor, I have gone through your query, as you have mentioned that you have small child don't worry he has history of fever since few days, redness in gums can be due to Viral fever, that's is viral dermatitis.  Don't worry you help your child in doing warm salt gargle three times a day You can apply Gum paint on gums and ask your child to spit after 5 minutes After doing this if your child won't get relief then consult dentist for oral examination and oral prophylaxis.  Hope this will help you.  Wishing your child good health.