Understanding Cold Sore Development & Treatment
What Causes Cold Sores?
Cold sores develop when the herpes simplex virus type 1 (HSV-1) becomes active. Once infected, the virus remains dormant in nerve cells and may reactivate due to stress, illness, sun exposure, or a weakened immune system. Many people carry HSV-1 without ever developing visible symptoms.
Recognising Cold Sore Stages
Cold sores typically progress through five distinct stages. The initial tingling stage lasts 1-2 days, followed by blister formation over days 2-4. The weeping stage occurs when blisters burst (most contagious period), then crusting begins around day 5-8. Complete healing usually occurs within 7-10 days.
Treatment Options Available
Antiviral medications such as aciclovir tablets may help reduce the severity and duration of cold sore outbreaks when taken at the first sign of symptoms. EverydayMeds offers prescription aciclovir 400mg tablets alongside topical aciclovir cream for comprehensive treatment approaches. Alternative antivirals like valaciclovir may also be suitable for some patients.
Prevention Strategies
While cold sores cannot be completely prevented, certain measures may help reduce outbreak frequency. These include managing stress levels, using sun protection on lips, avoiding triggers like extreme temperatures, and maintaining good overall health. During active outbreaks, avoid sharing personal items and direct contact to prevent transmission.
When to Seek Treatment
Consider seeking treatment if you experience frequent outbreaks, severe symptoms, or complications. Early treatment with prescription antivirals tends to be most effective, particularly when started within 24 hours of initial symptoms appearing.






