How should blisters from hand foot mouth treated? pediatricians please.

No need: The blisters from hfm disease do not need to be treated. As the infection resolves over several days, the blisters will resolve on their own. I know of no specific treatment that will hasten their resolution. If there id pain or itching, these symptoms can be addressed using acetaminophen(tylenol)/ibuprofen(motrin/advil) or diphenhydramine(benadryl).

Coxsackie virus: Hand, foot, and mouth is a virus. Thus, it is not treated with antibiotics. If your child is in pain, you should give the child tylenol (acetaminophen) and/or motrin. Your child may be more interested in drinking when the pain is best controlled. Also, you can take a teaspoon of Benadryl and a teaspoon of maalox (or its equivalent) and mix the two together. Apply a small amount to the blisters as needed.