Cold sores typically last between 7 to 14 days, with the entire healing process often taking up to 2 to 3 weeks in some cases. The usual duration from the first tingling sensation to full healing is about 1 to 2 weeks for most people
. The progression of a cold sore generally follows these stages:
- Tingling, itching, or burning sensation before the sore appears (prodrome stage)
- Formation of small fluid-filled blisters, often on or around the lips
- Blisters break open, ooze fluid, and then crust over forming a scab
- Healing phase where the scab falls off and the skin returns to normal
Cold sores are contagious from the moment the initial tingling starts until they have fully healed
. If untreated, cold sores usually clear up within 7 to 10 days but can last up to 3 weeks, especially during the first outbreak or in people with weakened immune systems
. Subsequent outbreaks tend to be less severe and shorter in duration
. In summary:
- Typical cold sore duration: 7 to 14 days
- Complete healing: up to 2 to 3 weeks
- Contagious period: from initial tingling until fully healed
- First outbreak may last longer and be more severe than recurrences
This timeline can vary depending on individual immune response and treatment use. Antiviral treatments can help speed healing and reduce severity
