###Human: Can herpes cause cold sore on lip? ###Assistant: Hello. As per the current picture sent by you, it does not look like a cold sore as of now (attachment removed to protect patient identity). Also, I would advise to stop all ongoing treatment (including the Hydrocortisone) and just leave it alone for a week. Apply Dologel only. It contains Cholinesalicylate along with certain other ingredients that help to heal. No application of any lipstick or any other ointments or creams to the region. I would not advise kissing for 2 more weeks atleast till things resolve to prevent spread. Also, limit alcohol intake if you are currently consuming alcohol. Avoid spicy foods too to promote healing.