Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
As per your complain recurring bumps on lips can be due to a number of reasons like Herpes infection [viral] , bacterial infection,
allergic reaction to certain lip products,
sun blisters caused by excessive sun exposure etc..
The most probable cause that I can rule out by knowing the symptoms is viral infection caused by
HERPES SIMPLEX VIRUS 1 infection causing cold sores..
Valtrex [valacyclovir] did not work as anti-viral
ointments cannot cure the active infection and can only reduce viral count..
But for a confirmatory diagnosis
consult a Dermatologist and get a viral as well as bacterial culture done to rule out the cause..
Other investigations and diagnoses can be done after clinical evaluation...
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.