Most cold sores last about 7 to 10 days from first tingle to healed skin — sometimes up to two weeks. Antiviral cream or tablets started early may shorten an episode for some people, but there is no overnight cure. GP Carely can advise on frequent outbreaks, early antivirals and looking-alike lip problems.
Typical cold sore timeline
Day 0–1: tingling or burning. Day 1–3: fluid-filled blisters. Day 3–5: weeping or crusting. Day 5–10+: crust dries and pink skin remains briefly. First-ever outbreaks can feel worse and last longer. People with weakened immunity should seek advice promptly rather than waiting a full fortnight.
Care that may help (and what to avoid)
Start pharmacy antiviral cream at the first tingle when suitable. Keep the area clean, avoid picking, do not share lip products, and skip kissing until healed. Lemon juice, toothpaste or harsh oils can irritate skin.
Wash hands after touching a sore and avoid eye contact — eye involvement needs urgent assessment.
When to book an online GP
Book if sores last beyond two weeks, outbreaks are frequent or severe, you are immunosuppressed, or you are unsure whether the lesion is herpes, impetigo or another lip problem. Ask about suppression options if flares keep returning.
Book dermatology-aware GP care
Use the form above for a video visit with GP Carely. Clear photos help. Call 999 for airway-threatening facial swelling or severe systemic illness.
Frequently Asked Questions
What is the fastest way to clear a cold sore?
Start an evidence-based antiviral at the first warning tingle and avoid picking. Expect days of healing, not hours.
Are cold sores contagious after they crust?
Risk is highest with active blisters, but careful hygiene until fully healed is still wise.
Can stress trigger cold sores?
Yes — illness, UV and stress are common triggers. Managing sleep and stress may reduce flare frequency for some people.
Medical notice: online GP care does not replace emergencies — call 999 for life-threatening symptoms. Clinical documents are only issued after a professional consultation. Policies, doctor profiles, privacy and terms are available on this site.
GP Carely — www.gpcarely.com — UK telemedicine platform connecting patients with GMC-registered GPs.