See a healthcare professional for confirmation and treatment advice
Start antiviral medicine as soon as possible after symptoms begin
Use prescription oral antivirals such as acyclovir, valacyclovir, or famciclovir if prescribed
Apply a doctor-recommended antiviral cream if prescribed
Keep the area clean and dry
Wash hands before and after touching the lip
Avoid picking, squeezing, or popping blisters
Use a cold compress to reduce pain and swelling
Take over-the-counter pain relievers if safe for you
Avoid kissing and oral sex until fully healed
Do not share cups, utensils, lip balm, towels, or razors
Avoid acidic, salty, or spicy foods if they irritate the sore
Get enough rest and manage stress
Use sunscreen or lip balm with SPF to help prevent future outbreaks
Seek urgent care if the sore is severe, spreads, or you have a weakened immune system