Recognizing the Symptoms
Cold sores usually follow a predictable cycle:
- Tingling or itching – A burning or tingling sensation appears around the lips 1–2 days before blisters form.
- Blisters – Small, fluid-filled bumps develop near the lip line or on the face.
- Oozing and crusting – Blisters break open, leaving shallow sores that form a yellowish crust before healing.
The entire process usually lasts 7–10 days, and while the first outbreak may be the worst, future ones often become less severe.

