What Does a Cold Sore Look Like? Visual Guide

Cold sores are small, fluid-filled blisters caused by the herpes simplex virus that typically appear on or around the lips. Recognising the early signs and stages of a cold sore can help you seek appropriate treatment promptly. Understanding what to look for at each stage enables faster intervention with antiviral treatments like aciclovir, which may help reduce severity and duration when started early.

  • Initial tingling, burning or itching sensation around the lip area
  • Small, fluid-filled blisters that appear within 24-48 hours
  • Blisters that burst and weep, forming yellow crusts or scabs
  • Complete healing process typically takes 7-10 days without treatment
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Available Treatments

Choose from a wide range of clinically-proven, safe, and effective treatments for Cold Sore.

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Aciclovir Tablets

From £12.99

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Aciclovir 5% Cream

From £8.99

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Valaciclovir

From £18.99

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Valtrex

From £34.99

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Cold Sore Stages: What to Expect

Stage 1: Initial Warning Signs (Days 1-2)

The first stage begins with a tingling, burning, or itching sensation around the lip area. You may notice slight swelling or redness where the cold sore will develop. This prodromal stage is when antiviral treatments like aciclovir tablets are most effective, as early intervention may help reduce the severity of the outbreak.

Stage 2: Blister Formation (Days 2-4)

Small, fluid-filled blisters appear, typically clustered together on or around the lips. These blisters contain clear fluid and may be painful or tender to touch. The surrounding skin often appears red and inflamed. At this stage, topical treatments such as aciclovir cream may provide additional relief alongside oral medication.

Stage 3: Weeping Stage (Days 4-5)

The blisters burst and release their fluid, creating open sores. This is the most contagious stage of a cold sore outbreak. The sores may appear red and wet, and can be quite painful. It's crucial to avoid touching the area and to maintain good hygiene to prevent spreading the virus.

Stage 4: Crusting and Scabbing (Days 5-8)

The open sores begin to dry out and form yellow or brown crusts or scabs. This protective covering helps the underlying skin heal. The scabs may crack or bleed if the mouth is opened too widely, which can delay healing.

Stage 5: Healing and Resolution (Days 8-10)

The scabs gradually fall off, revealing new, pink skin underneath. The area may remain slightly sensitive for a few days after the scab disappears. Complete healing typically occurs within 7-10 days, though this can vary between individuals.

Treatment Options Available

EverydayMeds offers several prescription treatments for cold sores, including aciclovir 400mg tablets for systemic treatment and aciclovir 5% cream for topical application. Valaciclovir tablets are also available as an alternative antiviral option. Early treatment during the initial tingling stage may help reduce both the duration and severity of cold sore outbreaks. Our online consultation service ensures you can access appropriate treatment quickly and discreetly.

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