Is a healed, raised cold sore still contagious?

Hello,

Welcome to icliniq.com.

I understand your concern.

I want to clarify that cold sores are caused by the herpes simplex virus type 1 (HSV-1), and transmission is most likely when there is an active lesion, especially during the tingling, blistering, or open sore stages.

However, viral shedding can still occur even when the sore appears healed or barely raised, which means there's still a possibility of transmitting HSV-1 to a partner during oral sex, including to their genital area, where it can cause genital herpes.

The risk is lower once the sore is fully healed and no symptoms are present, but it is not zero, especially if the area is still raised or irritated. If you now feel another sore coming on, it could suggest viral reactivation, and stress is a known trigger.

For future protection, consider avoiding oral contact. At the same time, symptomatic or during recent healing, talk to your doctor about starting antiviral therapy (such as Acyclovir or Valacyclovir), which can reduce viral shedding and transmission risk. Using barrier protection during oral sex is also a key preventive measure. If your partner is concerned, they may choose to get tested for HSV-1 to understand their baseline status.

I hope this helps.

Kindly follow up if you have more concerns.

Thank you.