Hello, Thank you for contacting HCM I understand your concern, I am Dr Arun Tank, Infectious Disease Specialist answering your query. No, Self medication is not advised. First of all you have to examined your child with the dermatologist whether it is herpes or not. Valtrex has some side effects so taking it with its own is not a safe thing. it should be taken under doctors guidance. I suspect it may not be herpes. Because herpes has severe burning pain. This things are absent in your complaint so I suspect that it is not a herpes. I advice you to take good care of hygiene as it alone cares fifty percent of the share in treatment as drugs do. Please wear the cotton clothes as it also helps relieving the infection. You can ask for further queries here on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious Disease specialist We wish you a best health at health care magic.