Dermatology Questions? Ask an Online Dermatologist.
Thank you for requesting me and apologies for the delay in responding. Am on Asia time and have only just seen your question this morning.
Did you have unprotected sex with a new partner in the last 1-2 weeks?
Did you apply anything new on the penis (e.g lubricant) within 24 hours of the blisters starting? Any new oral medicine during that time?