FAQs What are cold sores? December 16, 20170 Comments0246Views Q. What are cold sores? A. They are highly infectious lesions as the virus is present in the blisters, wet sores which can penetrate delicate tissue. It can easily be passed to other person. NOTE: Kindly consult with doctor before attempting any of the home cures.You may be interested in:Can I get cold sores if I diet?How to Cure Cold Sores at Home Naturally?Is cold contagious?Health Benefits of Horse ChestnutHow to Cure Canker Sore or Mouth Ulcers at Home Naturally?How are Warts caused and are they infectious?Benefits of CostmaryHealth Benefits of Lemon BalmShould I take antibiotics if I suffer from cold?How is cold different from flu?Also Read Can anybody suffer from cancer around nipples. I have brown, scab-like blemishes on and around my nipples.