Question: how long does a herpes outbreak last on lip?
Answer: The herpes sores (lesions) typically last a week to 10 days. They most often occur around the lips, tongue, or the mucous membrane lining the inside of the mouth (oral mucosa). The sores occur first as fluid-filled blisters that burst (rupture) after a day or two. The sores will ooze fluid that has the virus.