My 6 year old son has a small cluster of opaque to skin colored bumps on his face, just above his lip.  They have been there for a few months.  My dermatologist thought that it was just a pimple, but the bumps have been increasing in number.  When scratched or picked they do not have any liquid in them.  I dont believe that it is a cold sore.  I have these from time to time and know how they dry up, scab, etc.
Hi, Thank you for asking question on Chat Doctor. It may be a pimple as your dermatologist has told, or it may Herpes simplex infection. Any way it is not possible to diagnose without actually seeing the lesion. Follow the advice of the dermatologist. Hope this answer will serve your purposeless feel free to ask any more queries if requiredTake care Chat Doctor. V. Subrahmanyam MD;Disassociate professor of pediatrics