Hi, thanks for using healthcare magicGenital herpes
presents with initial redness
and discomfort which evolves into a painful blister rash
.These then become open painful ulcer lesions.
The acute rash can be treated by if you are infected with herpes, the virus remains in the system and the rash can recur.
If your partner has no previous sexual history it is unlikely that it is herpes however you may want to consider visiting your doctor for an evaluation to confirm this.
Blister type rashes can also potentially occur due to irritation of the vaginal area by soaps/lotions/creams or other chemical. This would be likely if the rash is also itchy.
It would be best to visit your doctor for an assessment.
I hope this helps